QW-3513 G Shock Watch

MA2207-EA

© 2022 CASIO COMPUTER CO., LTD.
Watch Operation Guide 3513

Contents
Precautions
Operating Precautions User Maintenance Battery
Before Getting Started…
General Guide Indicators Navigating Between Modes Mode Overview Charging Viewing the Face in the Dark
Time Adjustment
Adjusting the Current Time Setting
World Time
Checking World Time Specifying a World Time City
Alarm and Hourly Time Signal
Configuring Alarm Settings Configuring the Hourly Time Signal Setting Turning Off an Alarm or the Hourly Time Signal

Digital Compass
Taking a Compass Reading Saving a Bearing to an Objective (Bearing Memory) Calibrating Compass Readings
Calibrating Compass Readings Setting Up for True North Readings (Magnetic Declination Calibration) Digital Compass Reading Precautions
Altitude Measurement
Checking the Current Altitude Calibrating Altitude Readings (Offset) Setting a Reference Altitude and Taking Altitude Differential Readings Setting the Measurement Interval for Auto Record Data and Climb Record Data Changing Displayed Information Recording Altitude Readings Specifying the Altitude Measurement Unit Altitude Reading Precautions
Barometric Pressure and Temperature Measurement
Measuring Barometric Pressure and Temperature Checking Changes in Barometric Pressure Over Time Checking the Change Between Two Barometric Pressure Readings (Barometric Pressure Differential) Sudden Barometric Pressure Change Indications Correcting Measured Barometric Pressure and Temperature Values (Offset) Specifying the Barometric Pressure Unit Specifying the Temperature Measurement Unit Barometric Pressure and Temperature Reading Precautions

Viewing Altitude Records
Viewing Recorded Data Deleting Data
Sunrise and Sunset Times
Looking Up Today’s Sunrise and Sunset Times Looking Up Sunrise and Sunset Times by Specifying a Day Looking Up Sunrise and Sunset Times by Specifying a Location
Stopwatch
Measuring Elapsed Time Measuring a Split Time Timing the First and Second Place Finishers
Timer
Setting a Start Time Using the Timer
Other Settings
Enabling the Button Operation Tone Configuring Power Saving Function Settings
Other Information
City Table Specifications
Troubleshooting

OPUM-G

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Watch Operation Guide 3513

Precautions

Operating Precautions

Water Resistance
The information below applies to watches with WATER RESIST or WATER RESISTANT marked on the back cover.

Water Resistance Under Daily Use

Marking on watch front or on back cover
Example of Daily Use

No BAR mark

Hand washing, rain

Yes

Water-related work, swimming

No

Windsurfing

No

Skin diving

No

Enhanced Water Resistance Under Daily Use 5 Atmospheres

Marking on watch front or on back cover
Example of Daily Use

5BAR

Hand washing, rain

Yes

Water-related work, swimming Yes

Windsurfing

No

Skin diving

No

10 Atmospheres

Marking on watch front or on back cover
Example of Daily Use

10BAR

Hand washing, rain

Yes

Water-related work, swimming Yes

Windsurfing

Yes

Skin diving

Yes

20 Atmospheres

Marking on watch front or on back cover
Example of Daily Use

20BAR

Hand washing, rain

Yes

Water-related work, swimming Yes

Windsurfing

Yes

Skin diving

Yes

Do not use your watch for scuba diving or other types of diving that requires air tanks.
Watches that do not have WATER RESIST or WATER RESISTANT marked on the back cover are not protected against the effects of sweat. Avoid using such a watch under conditions where it will be exposed to large amounts of sweat or moisture, or to direct splashing with water.
Even if a watch is water resistant, note the usage precautions described below. Such types of use reduce water resistance performance and can cause fogging of the glass. Do not operate the crown or buttons while your watch is submersed in water or wet. Avoid wearing your watch while in the bath. Do not wear your watch while in a heated swimming pool, sauna, or any other high temperature/high humidity environment. Do not wear your watch while washing your hands or face, while doing housework, or while performing any other task that involves soaps or detergents.
After submersion in seawater, use plain water to rinse all salt and dirt from your watch.
To maintain water resistance, have the gaskets of your watch replaced periodically (about once every two or three years).
A trained technician will inspect your watch for proper water resistance whenever you have its battery replaced. Battery replacement requires the use of special tools. Always request battery replacement from your original retailer or from an authorized CASIO service center.
Some water-resistant watches come with fashionable leather bands. Avoid swimming, washing, or any other activity that causes direct exposure of a leather band to water.

The inside surface of the watch glass may fog when the watch is exposed to a sudden drop in temperature. No problem is indicated if the fogging clears up relatively quickly. Sudden and extreme temperature changes (such as coming into an air conditioned room in the summer and standing close to an air conditioner outlet, or leaving a heated room in the winter and allowing your watch to come into contact with snow) can cause it to take longer for glass fogging to clear up. If glass fogging does not clear up or if you notice moisture inside of the glass, immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.
Your water-resistant watch has been tested in accordance with International Organization for Standardization regulations.
Band
Tightening the band too tightly can cause you to sweat and make it difficult for air to pass under the band, which can lead to skin irritation. Do not fasten the band too tightly. There should be enough room between the band and your wrist so you can insert your finger.
Deterioration, rust, and other conditions can cause the band to break or come off of your watch, which in turn can cause band pins to fly out of position or to fall out. This creates the risk of your watch falling from your wrist and becoming lost, and also creates the risk of personal injury. Always take good care of your band and keep it clean.
Immediately stop using a band if you even notice any of the following: loss of band flexibility, band cracks, band discoloration, band looseness, band connecting pin flying or falling out, or any other abnormality. Take your watch to your original retailer or to a CASIO service center for inspection and repair (for which you will be charged) or to have the band replaced (for which you will be charged).

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Watch Operation Guide 3513

Temperature
Never leave your watch on the dashboard of a car, near a heater, or in any other location that is subject to very high temperatures. Do not leave your watch where it will be exposed to very low temperatures. Temperature extremes can cause your watch to lose or gain time, to stop, or otherwise malfunction.
Leaving your watch in an area hotter than +60 °C (140 °F) for long periods can lead to problems with its LCD. The LCD may become difficult to read at temperatures lower than 0 °C (32 °F) and greater than +40 °C (104 °F).
Impact
Your watch is designed to withstand impact incurred during normal daily use and during light activity such as playing catch, tennis, etc. Dropping your watch or otherwise subjecting it to strong impact, however, can lead to malfunction. Note that watches with shock-resistant designs (G-SHOCK, BABY-G, G-MS) can be worn while operating a chain saw or engaging in other activities that generate strong vibration, or while engaging in strenuous sports activities (motocross, etc.)
Magnetism
Though operation of your watch normally is not affected by magnetism, its accuracy may be affected if the watch itself becomes magnetized. Also, very strong magnetism (from medical equipment, etc.) should be avoided because it can cause malfunction of your watch and damage to electronic components.
Electrostatic Charge
Exposure to very strong electrostatic charge can cause your watch to display the wrong time. Very strong electrostatic charge even can damage electronic components.
Electrostatic charge can cause the display to go blank momentarily or cause a rainbow effect on the display.

Chemicals
Do not allow your watch to come into contact with thinner, gasoline, solvents, oils, or fats, or with any cleaners, adhesives, paints, medicines, or cosmetics that contain such ingredients. Doing so can cause discoloration of or damage to the resin case, resin band, leather, and other parts.
Storage
If you do not plan to use your watch for a long time, thoroughly wipe it free of all dirt, sweat, and moisture, and store it in a cool, dry place.
Resin Components
Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause color on resin components to transfer to the other items, or the color of the other items to transfer to the resin components of your watch. Be sure to dry off your watch thoroughly before storing it and make sure it is not in contact with other items.
Leaving your watch where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from your watch for long periods can cause it to become discolored.
Friction caused by certain conditions (strong external force, sustained rubbing, impact, etc.) can cause discoloration of painted components.
If there are printed figures on the band, strong rubbing of the printed area can cause discoloration.
Leaving your watch wet for long periods can cause fluorescent color to fade. Wipe the watch dry as soon as possible after it becomes wet.
Semi-transparent resin parts can become discolored due to sweat and dirt, and if exposed to high temperatures and humidity for long periods.
Daily use and long-term storage of your watch can lead to deterioration, breaking, or bending of resin components. The extent of such damage depends on usage conditions and storage conditions.

Leather Band
Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause the color of the leather band to transfer to the other items or the color of the other items to transfer to the leather band. Be sure to dry off your watch thoroughly with a soft cloth before storing it and make sure it is not in contact with other items.
Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from a leather band for long periods can cause it to become discolored.
CAUTION: Exposing a leather band to rubbing or dirt can cause color transfer and discoloration.
Metal Components
Failure to clean dirt from metal components can lead to formation of rust, even if components are stainless steel or plated. If metal components exposed to sweat or water, wipe thoroughly with a soft, absorbent cloth and then place the watch in a well-ventilated location to dry.
Use a soft toothbrush or similar tool to scrub the metal with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing metal components, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap.

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Watch Operation Guide 3513

Bacteria and Odor Resistant Band
The bacteria and odor resistant band protects against odor generated by the formation of bacteria from sweat, which ensures comfort and hygiene. In order to ensure maximum bacteria and odor resistance, keep the band clean. Use an absorbent soft cloth to thoroughly wipe the band clean of dirt, sweat, and moisture. A bacteria and odor resistant band suppresses the formation of organisms and bacteria. It does not protect against rash due to allergic reaction, etc.
Liquid Crystal Display
Display figures may be difficult to read when viewed from an angle.
Watch with Data Memory
Allowing the battery to go dead, replacing the battery, or having your watch repaired can cause all data in watch memory to be lost. Note that CASIO Computer Co., Ltd. assumes no responsibility for any damages or losses caused by data lost due to malfunction or repair of your watch, replacement of the battery, etc. Be sure to keep separate written copies of all important data.
Watch Sensors
A watch sensor is a precision instrument. Never try to take it apart. Never try to insert any objects into the openings of a sensor, and take care to ensure that dirt, dust, or other foreign matter does not get into it. After using your watch where it has been immersed in saltwater, rinse it thoroughly with fresh water.
Note that CASIO Computer Co., Ltd. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of your watch or its malfunction.

User Maintenance
Caring for Your Watch
Remember that you wear your watch next to your skin, just like a piece of clothing. To ensure your watch performs at the level for which it is designed, keep it clean by frequently wiping with a soft cloth to keep your watch and band free of dirt, sweat, water and other foreign matter.
Whenever your watch is exposed to sea water or mud, rinse it off with clean fresh water.
For a metal band or a resin band with metal parts, use a soft toothbrush or similar tool to scrub the band with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing the band, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap.
For a resin band, wash with water and then wipe dry with a soft cloth. Note that sometimes a smudge like pattern may appear on the surface of a resin band. This will not have any effect on your skin or clothing. Wipe with a cloth to remove the smudge pattern.
Clean water and sweat from a leather band by wiping with a soft cloth.
Not operating a watch crown, buttons, or rotary bezel could lead to later problems with their operation. Periodically rotate the crown and rotary bezel, and press buttons to maintain proper operation.

Dangers of Poor Watch Care
Rust
Though the metal steel used for your watch is highly rust-resistant, rust can form if your watch is not cleaned after it becomes dirty. Dirt on your watch can make it impossible for oxygen to come into contact with the metal, which can lead to breakdown of the oxidization layer on the metal surface and the formation of rust.
Rust can cause sharp areas on metal components and can cause band pins to fly out of position or to fall out. If you ever notice any abnormality immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.
Even if the surface of the metal appears clean, sweat and rust in crevasses can soil the sleeves of clothing, cause skin irritation, and even interfere with watch performance.
Premature Wear
Leaving sweat or water on a resin band or bezel, or storing your watch an area subject to high moisture can lead to premature wear, cuts, and breaks.
Skin Irritation
Individuals with sensitive skin or in poor physical condition may experience skin irritation when wearing a watch. Such individuals should keep their leather band or resin band particularly clean. Should you ever experience a rash or other skin irritation, immediately remove your watch and contact a skin care professional.
Battery
The special rechargeable battery used by your watch is not intended to be removed or replaced by you. Use of a rechargeable battery other than the special one specified for your watch can damage your watch.
The rechargeable (secondary) battery is charged when the solar panel is exposed to light, so it does not require regular replacement as the primary battery requires. Note, however, that long use or operating conditions can cause the capacity or charging efficiency of the rechargeable battery to deteriorate. If you feel that the amount of operation provided by charging is too short, contact your original retailer or CASIO service center.

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Watch Operation Guide 3513

Before Getting Started…
This section provides an overview of the watch and introduces convenient ways it can be used.
Watch Features Solar Charging
Sunlight and artificial light generate electricity for watch operation as it charges. World Time Displays the current time in any one of 48 cities (31 time zones) around the globe and UTC. Alarm and Hourly Time Signal An alarm sounds whenever a time specified by you is reached. Digital Compass You can use the Compass Mode to determine the direction of north, and to check your bearing to a destination. Altitude Measurement You can use this mode to take an altitude reading at your current location. You can record the altitude, along with the date and time of the measurement. You can also measure the altitude differential between two points. Barometric Pressure and Temperature Measurement You can display the current barometric pressure tendency, which helps you be on the alert for noteworthy pressure changes. The watch can be used to take current air temperature readings. Viewing Altitude Records You can view or delete records of altitude measurements. Sunrise and Sunset Times You can look up the sunrise and sunset times for a specified date and location. Stopwatch The stopwatch performs elapsed time measurement up to 999 hours, 59 minutes, 59.9 seconds in 1/10 second units. Timer Countdown from a start time specified by you. An alarm sounds when the countdown reaches zero.

Important!
This watch is not a special-purpose measuring instrument. Measurement function readings are intended for general reference only.
Whenever using the Digital Compass of this watch for serious trekking, mountain climbing, or other activities, be sure to always take along another compass to confirm readings. If the readings produced by the Digital Compass of this watch are different from those of the other compass, perform 2-point calibration of the Digital Compass to ensure better accuracy. Compass readings and calibration will not be possible if the watch is in the vicinity of a permanent magnet (magnetic accessory, etc.), metal objects, high-voltage wires, aerial wires, or electrical household appliances (TV, computer, cellphone, etc.) l Digital Compass
The watch’s Altimeter Mode calculates and displays relative altitude based on barometric pressure readings produced by its pressure sensor. Because of this, altitude values displayed by the watch may be different from your actual elevation and/or sea level elevation indicated for the area where you are located. Regular calibration in accordance with the local altitude (elevation) indications is recommended. l Altitude Measurement
Note
The illustrations included in this operation guide have been created to facilitate explanation. An illustration may differ somewhat from the item it represents.

General Guide
A button Pressing this button in the Timekeeping Mode enters the Altimeter Mode. B button Pressing this button in the Timekeeping Mode enters the Barometer/Temperature Mode. C button Pressing this button in the Timekeeping Mode enters the Compass Mode. D button Each press cycles between watch modes. In any mode, hold down this button for at least two seconds to return to the Timekeeping Mode. E button Pressing this button in the Timekeeping Mode cycles between displays. L button Press to turn on illumination.

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Watch Operation Guide 3513

Indicators

Navigating Between Modes
Your watch has the modes shown below. To return to the Timekeeping Mode from
any other mode, hold down (D) for at least two seconds.

Compass Mode

Altimeter Mode

”

%

%

$

Barometer/ Temperature Mode
”

$

%

Timekeeping Mode

” $

Mode Overview
Timekeeping Mode In this mode, the digital display shows the current date and time. You can also display the items below in the upper display area by pressing (E). Month, day Barometric pressure graph
Day of the week, date

&
Barometric pressure graph

& Month, day

ADisplayed while the watch is indicating summer time.
BDisplayed during p.m. times while 12-hour timekeeping is being used.
CDisplayed while Power Saving is enabled.
DDisplayed when the watch is in the Sunrise/Sunset Mode.
EDisplayed while Auto Light is enabled.
FShows the current charge level.
GAppears when the hourly time signal is on.
HShows the temperature unit being used.
IDisplayed while the button operation tone is disabled.
JDisplayed while the snooze alarm is turned on.
KDisplayed while barometric pressure change indication is enabled.
LShows the altitude unit being used.
MShows the barometric pressure measurement unit.
NDisplayed when an alarm is turned on.
OGraphic display of the altitude/barometric pressure differential.

%

%

World Time Mode
% Alarm Mode
% Timer Mode

Sunrise/Sunset Mode %
Data Recall Mode %
Stopwatch Mode

%
Use the buttons in the illustration above to navigate between modes.

&
Altimeter Mode Use this mode to take an altitude reading for your current location. l Altitude Measurement

Remeasure

AAltitude graph/altitude differential BAltitude CCurrent time

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Watch Operation Guide 3513

Compass Mode
Use this mode to take direction and bearing angle readings. l Digital Compass

Objective

Remeasure

Data Recall Mode Use this mode to view altitude records. l Viewing Altitude Records
Data search

Alarm Mode
The watch will beep when an alarm time is reached. l Alarm and Hourly Time Signal

Select alarm/ hourly time signal

ABearing at 12 o’clock

BGraphic pointer indicating north

CBearing angle at 12 o’clock

Barometer/Temperature Mode
Use this mode to take barometric pressure and temperature readings for your current location. l Barometric Pressure and Temperature
Measurement

Remeasure

ABarometric pressure graph BBarometric pressure CTemperature DBarometric pressure differential graphic

Data search

ARecord number
BAltitude
CRecording date
Stopwatch Mode Use this mode to measure elapsed time. l Stopwatch
Split/reset

Start/Stop

AStopwatch hours
BStopwatch minutes
CStopwatch seconds
DStopwatch 1/10 second
Timer Mode Use this mode to countdown from a desired start time. l Timer
Reset

On/off

Select alarm/ hourly time signal

AAlarm or hourly time signal status (on/off)
BAlarm number
CAlarm hour
DAlarm minute
World Time Mode You can view the current time in 48 cities (31 time zones), and UTC (Coordinated Universal Time) time. l World Time

ACity Codes (World Time Codes) BWorld Time City current time CHome City time

ATimer hours BTimer minutes CTimer seconds

Start/Stop

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Watch Operation Guide 3513

Charging
This watch runs on power supplied from a rechargeable (secondary) battery that is charged by a solar panel. The solar panel is integrated into the face of the watch, and power is generated whenever the face is exposed to light.
Charging the Watch When you are not wearing the watch, put it in a location where it is exposed to bright light.

While you are wearing the watch, make sure that its face (solar panel) is not blocked from light by the sleeve of your clothing. Power generation efficiency is reduced even when the face of the watch is blocked only partially.

YES

NO

Important!
Some light sources and environments can cause the watch to become extremely hot during charging, which creates the risk of burn injury and damage to internal watch components. Avoid charging the watch under conditions like the ones described below, where the temperatures may exceed 60 °C (140 °F). On the dashboard of a vehicle parked in the sun Near incandescent lamps, camera lights, halogen lamps, or other sources of heat In locations exposed to direct sunlight for long periods and other hot locations
The display panel may become black (or white, depending on the LCD type) under very high temperatures. This is temporary, and the display will return to normal at lower temperatures.

Checking the Charge Level A display indicator shows the watch’s current charge level.
Charge Level 1: Good All functions enabled.
Charge Level 2: Good All functions enabled.
Charge Level 3: Low [L] and [LOW] flash on the display and the functions below become disabled. Compass, altitude, barometric pressure/
temperature measurements Face illumination Sounds (alarm, etc.)
Charge Level 4: Low When the battery charge drops lower than Level 3, [CHG] starts to flash on the display and all functions become disabled.
Charge Level 5: Dead The digital display will go blank if the battery goes dead. Memory data is lost, and watch settings are returned to their initial factory defaults.
Important! Should the battery go low or go dead,
expose the face (solar panel) to light as soon as possible.

Note
When [H], [M], and [L] are all flashing on the display, it means that all functions are disabled due to momentary battery power consumption. l [H], [M], and [L] are flashing on the display.

Charging Time Guidelines
The table below shows guidelines for approximate charging times.

Charging Times Required for 1 Day of Operation

Light Level (Lux)
50,000 10,000 5,000
500

Approximate Charging Time
5 minutes 24 minutes 48 minutes
8 hours

Times Required to Achieve Next Charge Level
Sunny day, outdoors (50,000 lux)

Dead battery n Medium charge Medium charge n High charge High charge n Full charge

2 hours 15 hours 4 hours

Sunny day, near a window (10,000 lux)

Dead battery n Medium charge Medium charge n High charge High charge n Full charge

6 hours 73 hours 20 hours

Overcast day, near a window (5,000 lux)

Dead battery n Medium charge Medium charge n High charge High charge n Full charge

11 hours 148 hours 40 hours

Indoor fluorescent lighting (500 lux)

Dead battery n Medium charge Medium charge n High charge High charge n Full charge

147 hours –

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Watch Operation Guide 3513

Note
Actual charging time depends on the local charging environment.
Power Saving Function Leaving the watch in a dark location for about one hour between the hours of 10 p.m. and 6 a.m. will cause the display to go blank, and the watch to enter Level 1 power saving. If the watch is left in this condition for six or seven days, the watch will enter Level 2 power saving.
Power Saving Level 1 : Digital display goes blank to save power.
Power Saving Level 2 : Digital display goes blank to save power. All functions are disabled.
Recovering from Power Saving Operation Use one of the operations below to exit power saving. Press any button. Move the watch to a bright location. Trigger auto light by angling the watch
towards your face.
Note
The watch will not enter power saving in the cases below. While in the Stopwatch Mode While in the Timer Mode While the barometric pressure change indicator is displayed
You can enable or disable Power Saving. l Configuring Power Saving Function Settings
Note that the watch also may enter power saving if its face is blocked from light by your sleeve while you are wearing it.

Viewing the Face in the Dark
The face of the watch can be illuminated for viewing in the dark. To illuminate the face manually Pressing (L) turns on illumination. Illumination will turn off automatically if an
alarm starts to sound. Illumination may not turn on while a sensor
is taking a reading.
To illuminate the face when Auto Light is enabled
If Auto Light is enabled, face illumination will turn on automatically whenever the watch is positioned at an angle of 40 degrees or more.
40 degrees or more
Important!
Auto Light may not operate properly when the watch is at a horizontal angle of 15 degrees or greater from horizontal as shown in the illustration below.
Electro-static charge or magnetism can interfere with proper auto light operation. If this happens, try lowering your arm and then angle it towards your face again.
When moving the watch you may note a slight rattling sound. This is due to operation of the auto light switch, which determines the current orientation of the watch. It does not indicate malfunction.

Note Auto Light is disabled when any one of
the conditions below exists. Alarm, timer alert, or other beeper
sounding Watch in the Compass Mode While sunrise/sunset times are
being calculated
Configuring the Auto Light Setting 1. Enter the Timekeeping Mode.
l Navigating Between Modes 2. Hold down (L) for at least three seconds
to toggle Auto Light between enabled and disabled. [LT] is displayed while Auto Light is
enabled.
Note Auto Light is disabled while [CHG] is
shown on the display.

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Watch Operation Guide 3513

Specifying the Illumination Duration You can select either 1.5 seconds or three seconds as the illumination duration.
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display.
Home City

Time Adjustment
Use the procedures in this section to adjust the date and time settings.

5. Use (A) to change the summer time setting.
[OFF] The watch always indicates standard time.
[ON] The watch always indicates summer time.

3. Press (D) 10 times. [LIGHT] appears on the display with [1] or [3] flashing.
4. Press (A) to select an illumination duration. [1]: 1.5-second illumination [3]: 3-second illumination

Adjusting the Current Time Setting
Use the procedures below to adjust the current date and time settings, and to select a Home City.
Setting a Home City Use the procedure in this section to select a city to use as your Home City. If you are in an area that observes summer time, you can also enable or disable summer time.
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display.
Home City

6. Press (E) twice to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.

5. Press (E) twice to complete the setting operation.

3. Use (A) and (C) to change the Home City setting.
Holding down (A) or (C) scrolls through settings at high speed.
For details refer to the information below. l City Table
4. Press (D).

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Watch Operation Guide 3513

Setting the Time/Date Use the procedure below to change the time and date settings.
Important!
Configure the Home City setting before changing the current time and date settings. l Setting a Home City
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display.
Home City

3. Use (D) to display the setting you want to change. Each press of (D) cycles through settings in the sequence shown below.
Home City
Summer time
12/24-hour timekeeping
Seconds
Hours
Minutes

4. Configure the date and time settings. While the seconds are flashing, pressing (A) will reset them to 00. 1 is added to the minutes when the current seconds count is between 30 and 59 seconds. For all the other settings, use (A) and (C) to change the flashing setting. Holding down (A) or (C) scrolls through settings at high speed.
5. Repeat steps 3 and 4 to select time and date settings.
6. Press (E) twice to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.

Year

Month

Day

Operation tone enable/disable

Illumination duration

Power Saving

Changing Units

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Watch Operation Guide 3513

Switching between 12-hour and 24hour Timekeeping
You can specify either 12-hour format or 24hour format for the time display.
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display.
Home City

World Time
You can view the current time in 48 cities (31 time zones), and UTC (Coordinated Universal Time) time.

Specifying a World Time City
Use the procedure in this section to select a World Time city. If you are in an area that observes summer time, you can also enable or disable summer time.
1. Enter the World Time Mode. l Navigating Between Modes
2. Use (A) and (C) to display the city you want to specify as a World Time City. Holding down (A) or (C) scrolls through settings at high speed.

3. Press (D) twice.
This causes [12H] or [24H] to flash on the display.

4. Press (A) to select [12H] (12-hour timekeeping) or [24H] (24-hour timekeeping).

12-hour timekeeping

24-hour timekeeping

Checking World Time

1. Enter the World Time Mode. l Navigating Between Modes
This displays [WT]. After one second, the city code and name of your currently selected World Time City appears.

City code

World Time City Name

World Time Home Time

3. To change the summer time setting, hold down (E) for about two seconds.
This causes [DST] [Hold] [On] or [DST] [Hold] [OFF] to flash on the display. After that, the setting is changed.
[DST] [Hold] [On] flashing on the display indicates summer time.
[DST] [Hold] [OFF] flashing on the display indicates standard time.
[DST] is displayed while summer time is selected.

5. Press (E) twice to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.

Note
While [UTC] is selected as the city, you will not be able to change or check the summer time setting.
The summer time setting you configure is applied to the currently selected city only. It does not affect other cities.

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Watch Operation Guide 3513

Alarm and Hourly Time Signal
The watch will beep when the alarm time is reached. You can configure up to four standard daily alarms, and one daily alarm with snooze. The hourly time signal causes the watch to beep every hour on the hour.
Snooze causes the alarm to sound up to seven times, at five-minute intervals.
The alarm sound is muted in the cases described below. When battery power is low When watch is at Level 2 power saving l Power Saving Function

3. Hold down (E) for at least two seconds. Release the button when the hour setting starts to flash.

The

(alarm) indicator is displayed

when any alarm is turned on.

Alarm hour
4. Use (A) and (C) to change the hour setting. Holding down (A) or (C) scrolls through settings at high speed. If you are using 12-hour timekeeping, [P] indicates p.m.

To stop the alarm To stop the alarm after it starts to sound when an alarm time is reached, press any button. Snooze causes the alarm to sound up to seven times, at five-minute intervals. To cancel a snooze alarm, turn [SNZ] off. l Turning Off an Alarm or the Hourly Time
Signal
Note
A beeper sounds for 10 seconds when an alarm time is reached.
Configuring the Hourly Time Signal Setting
1. Enter the Alarm Mode. l Navigating Between Modes
2. Press (A) or (C) to display the hourly time signal screen ([SIG]).

Configuring Alarm Settings
1. Enter the Alarm Mode. l Navigating Between Modes
2. Use (A) and (C) to select the alarm ([AL-1] to [AL-4], or [SNZ]) whose setting you want to change.
Alarm number
Alarm time

5. Press (D). This causes the minutes digits to flash.
Alarm minute
6. Use (A) and (C) to set the minute setting. 7. Press (E) to complete the setting
operation. Note If you do not perform any operation for
about three minutes while in the Alarm mode, the watch automatically returns to the Timekeeping Mode.

3. Press (B) to toggle the hourly time signal between enabled and disabled.
(hourly time signal) is shown on the display while the hourly time signal is turned on.

13

Watch Operation Guide 3513

Turning Off an Alarm or the Hourly Time Signal
To stop an alarm or the hourly time signal from sounding, perform the steps below to turn it off. To have an alarm or hourly time signal
sound again, turn it back on.
Note
Indicators are displayed while any of the alarms or the hourly time signal is turned on.
The applicable indicators are not displayed while all of the alarms are turned off and/or the hourly time signal is turned off.

Hourly time signal

Alarm Snooze

1. Enter the Alarm Mode. l Navigating Between Modes
2. Use (A) and (C) to scroll through the alarm ([AL-1] to [AL-4], [SNZ]) and hourly time signal ( ) screens until the one you want to turn off is displayed.
Alarm number or hourly time signal
3. Press (B) to turn off the displayed alarm or the hourly time signal. Each press of (B) toggles between on and off. Turning off all alarms causes (alarm) to disappear from the display. Turning off the hourly time signal causes (hourly time signal) to disappear.

Digital Compass
You can use the Compass Mode to determine the direction of north, and to check your bearing to a destination.
Important! Check the information at the link below
to find out how to ensure correct readings. l Calibrating Compass Readings l Digital Compass Reading
Precautions

Note

If

(alarm) is still displayed after

you turn off an alarm, it means that at least one of the other alarms is still turned on. To turn off all of the alarms,

repeat steps 2 and 3 until the

(alarm) indicator is no longer displayed.

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Watch Operation Guide 3513

Taking a Compass Reading
1. Enter the Compass Mode. l Navigating Between Modes Entering the Compass Mode starts compass readings.
2. Keeping the watch horizontal, point 12 o’clock in the direction of your desired objective. The digital display shows one of 16 literal direction indications and the bearing angle. To retrigger the compass operation, press (C).
Interpreting Bearing Readings Directions: N (North), E (East), W (West), S (South)

Objective

Bearing angle

Graphic direction pointer

North

Bearing angle to objective Bearing to objective
The graphic direction pointer indicates north, south, east, and west. The graphic direction pointer indicating north consists of three lines.
Graphic direction pointer (north)
West

South

East

Note
Normally the Compass Mode indicates magnetic north. You can also configure settings to indicate true north. l Setting Up for True North Readings (Magnetic Declination Calibration) l Magnetic North and True North
After the initial reading is displayed, the watch will continue to take readings approximately every second for approximately the next 60 seconds. After measurement is complete, the graphic direction pointer disappears from the display, and [- – -] is shown for the bearing to your objective and its bearing angle.
If four directions (north, south, east, west) and your target bearing are not displayed on the screen when you press (C), the bearing recorded in the bearing memory may be displayed instead of four directions. Press (E) to clear the recording bearing. l Saving a Bearing to an Objective (Bearing Memory)
Auto Light will not illuminate the face while a compass operation is in progress.
If an alarm or other beeper sounds, or if you turn on illumination by pressing (L) while a compass operation is in progress, the compass operation will be suspended momentarily. The compass operation will resume when the beeper stops or illumination turns off.
If you do not perform any operation for about two or three minutes while in the Compass Mode, the watch automatically returns to the Timekeeping Mode.

Aligning a Map with Actual Surroundings (Setting a Map)
Setting a map means to align the map so the directions indicated on it are aligned with the actual directions of your location. Once you set a map, you can more easily get a grasp of the relationship between map markings and actual geographic contours. To set a map with this watch, align north on the map with the north indication of the watch. Once you set the map, you can compare your bearing on the map with your surroundings, which will help you determine your current location and destination. Note that map reading skills and experience
are required to determine your current location and destination on a map.
Saving a Bearing to an Objective (Bearing Memory)
You can use record the bearing to a destination. Displaying the recorded bearing makes it possible to progress towards your target destination when the visibility is poor.
1. Enter the Compass Mode. l Navigating Between Modes
2. Keeping the watch horizontal, point 12 o’clock in the direction of the objective your want to record.
3. Press (E). The direction of the 12 o’clock position of the watch is recorded as the target direction and indicated by the graphic direction pointer.
Recorded bearing angle
Target bearing North
To clear a recorded bearing, press (E).

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Watch Operation Guide 3513

Calibrating Compass Readings
Calibrating Compass Readings Perform 2-point calibration whenever you notice the watch’s compass readings are different from those of another compass, or before setting out on a climb or trek. Note that accurate compass readings
and/or calibration will not be possible in an area where strong magnetism is present. l Digital Compass Reading Precautions
2-Point Calibration
1. Enter the Compass Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds until the three-line graphic direction pointer flashes at 12 o’clock. Release the button when [CALIBRATION] [-1-] appears on the display.
Graphic direction pointer

3. While keeping the watch horizontal, press (C). This starts calibration of the first point, which causes [- – -] to appear on the display. [Turn 180°] appears on the display when calibration is successful, and the three-line graphic direction pointer flashes at 6 o’clock. One second later, [CALIBRATION] [-2-] appears on the display.
4. Rotate the watch 180 degrees, taking care to be as exact as possible.
5. Press (C). This starts calibration of the second point, which causes [- – -] to appear on the display. When calibration is successful, [OK] appears on the display and the watch returns to the Digital Compass screen.
Note [ERR] [-1-] appears if calibration fails
for some reason. If this happens, restart the above procedure from step 3.

Setting Up for True North Readings (Magnetic Declination Calibration) If you want the watch to indicate true north instead of magnetic north, you need to specify your current location’s magnetic declination direction (east or west) and declination angle. l Magnetic North and True North The magnetic declination angle value can be set in 1° (degree) units only. Use a value that is closest to the angle you want to set. Example: For an angle of 7.4°, set 7°. Example: For an angle of 7°40′ (7 degrees, 40 minutes), set 8°.
Note
Magnetic declination angles (east or west) and angle degree values for specific locations can be found on geographic maps, mountain climbing maps, and other maps that include contour lines.
1. Enter the Compass Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds until the three-line graphic direction pointer flashes at 12 o’clock. Release the button when [CALIBRATION] [-1-] appears on the display.
Graphic direction pointer
3. Press (D). This displays [DEC] [0°].

16

Watch Operation Guide 3513

4. Use (A) (East) and (C) (West) to change the magnetic declination direction and angle. Holding down (A) or (C) scrolls through settings at high speed. Setting range: 90° west to 90° east [OFF]: Magnetic north [E]: East declination (Magnetic north is east of true north.) [W]: West declination (Magnetic north is west of true north.) To return the setting to [OFF], press (A) and (C) at the same time.
Magnetic declination direction
Magnetic declination angle
5. Press (E) to complete the setting operation.
Magnetic North and True North There are actually two types of north: magnetic north and true north. Magnetic north: North indicated by the needle of a compass True north: Direction to the North Pole As shown in the illustration below, magnetic north and true north are not the same.
True north Magnetic north
Earth
Note
The north indicated on commercially available maps is normally true north.

Digital Compass Reading Precautions
Location During Use
Taking readings near sources of strong magnetism can cause reading error. Keep the watch away from the following types of items.
Permanent magnets (magnetic accessories, etc.), metal objects, high-voltage wires, aerial wires, electrical household appliances (TVs, computers, cellphones, etc.)
Note that correct direction readings are not possible indoors, especially inside of reinforced concrete structures.
Accurate direction readings are not possible on electric trains, on boats, on aircraft, etc.
Storage Location
Exposure of the watch to magnetism can affect the accuracy of digital compass readings. Keep the watch away from the types of items below.
Permanent magnets (magnetic accessories, etc.), metal objects, electrical household appliances (TVs, computers, cellphones, etc.)

Altitude Measurement
The watch takes altitude readings and displays results based on air pressure measurements taken by a built-in pressure sensor.
Important!
The altitude readings displayed by the watch are relative values that are calculated based on barometric pressure measured by the watch’s pressure sensor. This means that barometric pressure changes due to weather can cause altitude readings taken at the same location to be different. Also note that the value displayed by the watch may be different from the actual elevation and/ or sea level elevation indicated for the area where you are located. When using the watch’s altimeter while mountain climbing, it is recommended that you regularly calibrate its readings in accordance with local altitude (elevation) indications. l Calibrating Altitude Readings (Offset)
Check the information at the link below to find out about how to minimize differences between readings produced by the watch, and values provided by local altitude (elevation) indications. l Calibrating Altitude Readings (Offset) l Altitude Reading Precautions

17

Watch Operation Guide 3513

Checking the Current Altitude

1. Enter the Altimeter Mode. l Navigating Between Modes

You can select either of two Altimeter Mode screens. l Changing Displayed Information

Altitude Graph Screen

Altitude Differential Screen

Altitude Graph Screen

Altitude Differential Screen

Entering the Altitude Mode will start altitude measurement and display the altitude at your current location.
The watch takes altitude readings every second for about the first three minutes. After that, it takes readings according to the watch’s auto measurement interval setting.
Check the information at the link below to find out how to configure the auto measurement interval. l Setting the Measurement Interval for Auto Record Data and Climb Record Data
To retrigger measurement, press (A).
To return to the Timekeeping Mode, press (D).
Note
Measurement range: -700 to 10,000 meters (-2,300 to 32,800 feet) (Measurement unit: 1 meter (5 feet)) Note that calibrating altitude readings will cause a change in the measurement range.
[- – -] will appear for the measured value if it is outside the allowable range.

ACurrent location altitude BAltitude graph CDifferential between reference altitude
and current altitude Interpreting Altitude Graph Contents
Current reading
80m*

Old

• 1 square (v) is 10 m.

Latest

Calibrating Altitude Readings (Offset)
To minimize the difference between locally indicated and measured values, you should update the reference altitude value (offset) before setting off and during treks or any other activities where you take altitude readings.
Also, you can ensure accurate measurements by checking a map local altitude indications or some other source for your current location’s altitude, and regularly calibrating watch readings with the latest information while mountain climbing.
Note
You can find out the altitude at your current location from signs, maps, on the Internet, etc.
Differences between actual altitude and watch readings can be caused by the factors below. Changes in barometric pressure Changes in temperature caused by variations in barometric pressure and by elevation
Though altitude readings can be taken without calibration, doing so may produce readings that are very different from indications by altitude markers, etc.

18

Watch Operation Guide 3513

1. Enter the Altimeter Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when [ALTI] appears on the display. This displays the current altitude and enters the Altitude Offset Mode.
3. Use (A) and (C) to change the altitude value to an elevation value obtained from another source. Setting range: -10,000 to 10,000 meters (or -32,800 to 32,800 feet) Setting unit: 1 meter (or 5 feet) Holding down (A) or (C) scrolls through settings at high speed. To return the altitude setting to its initial factory default, press (A) and (C) at the same time. This displays [OFF].
4. Press (E) to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.

Setting a Reference Altitude and Taking Altitude Differential Readings
You can use the procedure below to display the differential between a reference altitude and another altitude. This makes it easy to display the altitude differential between two points while climbing or trekking. Select the Altitude Differential Screen. l Changing Displayed Information 1. Use the contour lines on your map to
determine the altitude differential between your current location and your destination. 2. Take an altitude reading of your current location. l Checking the Current Altitude 3. Use (E) to set your current location as the reference altitude. This makes the altitude differential ±0 m (±0 feet).
Altitude differential indicator
Current location altitude
4. While comparing the difference between the altitude you found on the map and the altitude differential displayed by the watch, advance towards your destination.
Altitude differential indicator
Current location altitude
When the altitude differential you found on the map is the same as that displayed by the watch, it means you are close to your destination.
Note
[- – – -] appears when the altitude differential is outside the measurement range (±3,000 m).

Setting the Measurement Interval for Auto Record Data and Climb Record Data
You can select an auto measurement interval of either five seconds or two minutes. 1. Enter the Altimeter Mode.
l Navigating Between Modes 2. Hold down (E) for at least two seconds.
Release the button when [ALTI] appears on the display. This displays the altitude for your current location.
3. Press (D). This causes the auto measurement interval to appear on the display.
4. Press (A) to toggle the auto measurement interval between [0’05] and [2’00]. [0’05]: Readings taken every second for the first three minutes, and then every five seconds for about the next one hour. [2’00]: Readings taken every second for the first three minutes, and then every two minutes for about the next 12 hours.
5. Press (E) to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.
The watch will automatically return to the Timekeeping Mode if you do not perform any operation in the Altimeter Mode for about one hour while [0’05] is selected as the measurement interval or about 12 hours while [2’00] is selected.

19

Watch Operation Guide 3513

Changing Displayed Information
In the Altimeter Mode, you can use the procedure below to select either the Altitude Graph Screen or Altitude Differential Screen.
1. Enter the Altimeter Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when [ALTI] appears on the display. This displays the altitude for your current location.

3. Press (D) twice.
After [DISP] appears on the display, the altitude graph or [DIFF] (altitude differential) flashes on the display.

4. Use (A) to toggle between the screens.
Each press of (A) toggles between the Altitude Graph Screen and the Altitude Differential Screen.

Altitude Graph Screen

Altitude Differential Screen

5. Press (E) to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.

Recording Altitude Readings
Use the procedure below to record measured altitude data. There are three types of altitude data: manually recorded data, auto record data, and climb record data. Use the Data Recall Mode to view or delete
records. l Viewing Altitude Records Manually Recorded Data The date and time are also recorded along with the altitude measurement. The watch has memory for up to 30 measurement records, and records are sequentially assigned numbers from [-01-] to [-30-].
1. Enter the Altimeter Mode. l Navigating Between Modes
2. Hold down (A) for at least two seconds until [REC] stops flashing. This records the current altitude, date, and time. If you do not remove your finger and continue to press (A), climb recording will be toggled between enabled and disabled.
Note
Recording altitude data when there are already 30 records in memory automatically deletes the oldest record to make room for the new one.

Auto Record Data Entering the Altimeter Mode automatically starts altitude data measurement at regular intervals. Each auto record data measurement uses one memory record. Each record includes the date (month, day) and time of the measurement, along with the altitude data (high/low altitude, cumulative ascent/descent). l Auto Record and Climb Record Data
Contents
You can select the measurement interval. l Setting the Measurement Interval for Auto Record Data and Climb Record Data
Note
Auto recording ends when you exit the Altimeter Mode. Re-entering the Altimeter Mode restarts recording of cumulative values from where it was stopped when you last exited the Altimeter Mode.
Climb Record Data Starting a climb record operation automatically records altitude data at regular intervals, even if you exit the Altimeter Mode. Each record includes the date (month, day) and time of the measurement, along with the altitude data (high/low altitude, cumulative ascent/descent). The watch has memory for up to 14 measurement data records, and records are sequentially assigned numbers from [Mt.1] to [Mt.14]. l Auto Record and Climb Record Data
Contents
Altitude is measured and recorded at regular intervals for up to 12 hours even if you exit the Altimeter Mode.
You can select the measurement interval. l Setting the Measurement Interval for Auto Record Data and Climb Record Data
Recording automatically stops when battery power goes low.
Note
Climb record data can be recorded for up to 14 climbs. It includes high and low altitudes, and cumulative ascent and descent.

20

Watch Operation Guide 3513

To start measurement
1. Enter the Altimeter Mode. l Navigating Between Modes
2. Hold down (A) for at least five seconds. Release the button when [Trek] and mountain climbing graphic segments appear on the display. This starts recording of altitude data (high/ low altitude, cumulative ascent/descent).
Mountain climbing graphic segments
Mountain climbing graphic segments flash or are displayed around the periphery of the display while recording is in progress. Each segment represents 12 minutes, and one lap around the periphery represents 12 hours.
To stop measurement
1. Enter the Altimeter Mode. l Navigating Between Modes
2. Hold down (A) for at least five seconds. Release the button when [Trek] [END] appears on the display. This stops altitude data (high/low altitude, cumulative ascent/descent) recording.

Auto Record and Climb Record Data Contents
The altitude data below is recorded by auto record and climb record operations.
E

Start point

A

B

CD

F End point

High Altitude (MAX): E Low Altitude (MIN): F Cumulative Ascent (ASC): A+C Cumulative Descent (DSC): B+D * Cumulative ascent and cumulative descent
values are updated whenever there is a difference of at least ±15 m (±49 feet) from one reading to the next.
Note
In the case of auto record data, the auto record operation ends if you exit the Altimeter Mode. Re-entering the Altimeter Mode restarts recording of cumulative values from where it was stopped when you last exited the Altimeter Mode.
For climb record data, auto measurement continues even if you exit the Altimeter Mode.

Specifying the Altitude Measurement Unit
You can select either meters (m) or feet (ft) as the Altimeter Mode display unit.
Important! When Tokyo (TYO) is set as the Home
City, the altitude unit is fixed as meters (m) and cannot be changed.
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display. Example: When your Home City is London
Home City
3. Press (D) 12 times. This displays [UNIT].

Note
If you want to record more than 15 data records, delete old records to make room for the new data. l Deleting a Particular Record

4. Use (A) to select an altitude unit. [m]: Meters [ft]: Feet

Meters

Feet

5. Press (E) twice to complete the setting operation.

21

Watch Operation Guide 3513

Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.
Altitude Reading Precautions
Effects of Temperature When taking altitude readings, take the steps below to keep the watch at as stable a temperature as possible. Changes in temperature can affect altitude readings. Take readings with the watch on your wrist. Take readings in an area where
temperature is stable.
Altitude Readings Do not use this watch while skydiving, hang
gliding, paragliding, gyrocopter flying, glider flying, or engaged in other activities where altitude changes suddenly. Altitude readings produced by this watch are not intended for special-purpose or industrial level use. In an aircraft, the watch measures the incabin pressurized air pressure, so readings will not match altitudes announced by the crew.
Altitude Readings (Relative Altitude) This watch uses International Standard Atmosphere (ISA) relative altitude data defined by the International Civil Aviation Organization (ICAO). Barometric pressure generally becomes lower as altitude increases. Correct measurement may not be possible under the conditions below. During unstable atmospheric conditions During sudden temperature changes After the watch has been subjected to
strong impact

Barometric Pressure and Temperature Measurement
You can use the watch to take barometric pressure and temperature readings for your current location.
Important! Check the information at the link below
to find out how to ensure correct readings. l Correcting Measured Barometric
Pressure and Temperature Values (Offset) l Barometric Pressure and Temperature Reading Precautions

Measuring Barometric Pressure and Temperature
1. Enter the Barometer/Temperature Mode. l Navigating Between Modes Entering the Barometer/Temperature Mode starts measurement, and displays the barometric pressure and temperature at your current location, and a barometric pressure graph. After you enter the Barometer/ Temperature Mode, the watch takes readings about every five seconds for three minutes. After that, a measurement is taken about every two minutes.
Barometric pressure Barometric pressure graph
Temperature Barometric pressure differential graphic
To re-trigger measurement, press (B). To return to the Timekeeping Mode,
press (D).
Note
The watch will automatically return to the Timekeeping Mode if you do not perform any operation in the Barometer/Temperature Mode for about one hour.
Measurement ranges are shown below. [- – -] will appear for the measured value if it is outside the allowable range. Barometric pressure measurement: 260 hPa to 1,100 hPa (7.65 inHg to 32.45 inHg) Thermometer measurement: -10.0°C to 60.0°C (14.0°F to 140.0°F)

22

Watch Operation Guide 3513

Checking Changes in Barometric Pressure Over Time
Your watch shows a graph of barometric pressure readings taken at two-hour intervals. You can view barometric pressure readings for the past 42 hours. The square (v) at the far right of the graph indicates the latest barometric pressure reading.
Barometric pressure (1 hPa per division)
Time (2 hours per division)

Predicting Upcoming Weather

A trend like this:

Means this:

Rising barometric pressure, which indicates that upcoming weather probably will be fair.

Falling barometric pressure, which indicates that upcoming weather probably will be bad.

Note

Large changes in barometric pressure and/or temperature can cause past data readings to be plotted outside of the visible area of the graph. Though plots are not visible, the data is still maintained in watch memory.

Checking the Change Between Two Barometric Pressure Readings (Barometric Pressure Differential)

In the Barometer/Temperature Mode, the display shows the current measured value, and a graphic indicator of the differential between the automatically measured current value and the latest value measured at twohour intervals.
Example: Barometric pressure differential of -3 hPa (approximately -0.9 inHg)
Unit: hPa

Range: ±10 hPa (1 hPa units)

Pressure Differential Indicator

Note
The barometric pressure differential graphic indicator will not be displayed if the barometric pressure differential exceeds ±10 hPa, or if the barometric pressure measurement value exceeds the measurement range.

Sudden Barometric Pressure Change Indications

Whenever the watch detects a significant change in air pressure readings (due to sudden ascent or descent, or to the passage of a low-pressure or high- pressure area), it will beep to let you know. An arrow will also flash on the display at this time if the watch is in the Barometer/Temperature Mode, or if it is in the Timekeeping Mode with the barometric pressure graph displayed. The arrow that appears shows the direction of the pressure change. These alerts are called “Barometric Pressure Change Indications”.

This indicator:

Means this:

Sudden drop in pressure

Sudden rise in pressure
Sustained rise in pressure, shifting to a fall
Sustained fall in pressure, shifting to a rise
Important!
To ensure correct barometric pressure change indicator operation, enable it in a location where the altitude is constant (such as a lodge, camp area, or on the ocean).
A change in altitude causes a change in air pressure. Because of this, correct readings are impossible. Do not take readings while ascending or descending a mountain, etc.

23

Watch Operation Guide 3513

1. Enter the Barometer/Temperature Mode. l Navigating Between Modes
2. Hold down (B) for at least two seconds. If Barometric Pressure Change Indications are enabled, [INFO] [Hold] [On] flash on the display, and then [BARO] appears.
3. To disable Barometric Pressure Change Indication, hold down (B) again for at least two seconds. [INFO] [Hold] [OFF] flash on the display, and then [BARO] disappears.
Note
If the Barometric Pressure Change Indication is enabled, readings are taken every two minutes even while the watch is not in the Barometer/ Temperature Mode.
The Barometric Pressure Change Indication becomes disabled automatically 24 hours after it is enabled.
Power Saving is disabled while barometric pressure trend information is enabled. l Power Saving Function
You will not be able to turn on Barometric Pressure Change Indication while the charge level of the watch’s battery is low.
Low battery power will also cause Barometric Pressure Change Indication to turn off.

Correcting Measured Barometric Pressure and Temperature Values (Offset)
The watch’s built-in pressure sensor and temperature sensor are adjusted at the factory and normally do not require correction. However, you can correct the displayed value if you notice major errors in readings.
Important!
The watch will not be able to produce correct barometric pressure readings if you make a mistake during the correction procedure. Check to ensure that the values you use for calibration produces correct pressure and temperature readings.
Before adjusting the temperature sensor, remove the watch from your wrist and leave it in the area where you plan to measure temperature for about 20 or 30 minutes to allow the case temperature to become the same as the air temperature.
1. Enter the Barometer/Temperature Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when [TEMP] appears on the display. This causes the temperature reading to flash on the display.
Barometric pressure
Temperature

3. Press (D) to select the temperature correction or barometric pressure correction screen.

Temperature correction screen

Barometric pressure correction screen

4. Use (A) and (C) to change the value. Temperature Setting Unit: 0.1 °C (or 0.2 °F) Barometric Pressure Setting Unit: 1 hPa (or 0.05 inHg) Holding down (A) or (C) scrolls through settings at high speed. To return the barometric pressure setting to its initial factory default, press (A) and (C) at the same time.
5. Press (E) to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.

24

Watch Operation Guide 3513

Specifying the Barometric Pressure Unit
You can specify either hectopascals (hPa) or inches of mercury (inHg) as the display unit for barometric pressure values.
Important!
When Tokyo (TYO) is the Home City, the barometric pressure unit is fixed as hectopascals (hPa) and cannot be changed.
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display. Example: When your Home City is London
Home City

4. Use (B) to select a barometric pressure unit. [hPa]: Hectopascals [inHg]: Inches of mercury

Hectopascals

Inches of mercury

5. Press (E) twice to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.

Specifying the Temperature Measurement Unit
You can select either Celsius (°C) or Fahrenheit (°F) as the temperature display unit.
Important!
When Tokyo (TYO) is the Home City, the temperature unit is fixed as Celsius (°C) and cannot be changed.
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display. Example: When your Home City is London
Home City

3. Press (D) 12 times. This displays [UNIT].

3. Press (D) 12 times. This displays [UNIT].

4. Use (C) to select a temperature unit. [°C]: Celsius [°F]: Fahrenheit

Celsius

Fahrenheit

5. Press (E) twice to complete the setting operation.
25

Watch Operation Guide 3513

Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.
Barometric Pressure and Temperature Reading Precautions
Barometric Pressure Reading Precautions
The barometric pressure graph produced by this watch can be used to obtain an idea of upcoming weather conditions. However, this watch should not be used in place of precision instruments required for official weather prediction and reporting.
Pressure sensor readings can be affected by sudden changes in temperature. Because of this, there may be some error in the readings produced by the watch.
Temperature Reading Precautions Body temperature, direct sunlight, and
humidity all have an effect on temperature readings. To help ensure more accurate temperature readings, remove the watch from your wrist, wipe it dry of any moisture, and place it in a well-ventilated location not exposed to direct sunlight. You should be able to take temperature readings after about 20 to 30 minutes.

Viewing Altitude Records
You can use the Data Recall Mode to view manually recorded, auto recorded, and climb record altitude measurement data. l Recording Altitude Readings

Viewing Recorded Data

1. Enter the Data Recall Mode. l Navigating Between Modes
This displays a record of data recorded in the Altimeter Mode.

2. Press (B) to select manually recorded data, auto record data, or climb record data.

Manually Recorded Data

Auto Record Data

Climb Record Data

*

• Each press of (B) scrolls through climb data records from record 1 ([Mt.1]) up to a maximum of record 14 ([Mt.14]).
  3. Use (A) and (C) to display the data you want to view.
  Holding down (A) or (C) scrolls through settings at high speed.

Manually Recorded Data ([-01-] to [-30-])
Record number “*1 $

Month, day 2 Altitude
1 Each press of the button scrolls through manually recorded data records from record 1 ([-01-]) up to a maximum of record 30 ([-30-]). *2 The date (month, day) and time alternate on the display at one-second intervals.
Auto Record Data

High Altitude

Low Altitude

”

*1

”

$

Cumulative Descent

$

*1

$

”

Cumulative Ascent

$

”

*2

*2

1 The recording date (month, day) and time alternate on the display at one-second intervals.
2 The date (month, day) and year when accumulation started alternate on the display at one-second intervals.

26

Watch Operation Guide 3513

Climb Record Data ([Mt.1] to [Mt.14])

High Altitude

Low Altitude

”

*1

”

$

Cumulative Descent

$

*1

$

”

Cumulative Ascent

$

”

*2

*2

1 The recording date (month, day) and time alternate on the display at one-second intervals.
2 The date (month, day) and year when accumulation started alternate on the display at one-second intervals.

Note

If there is no data left in memory due to a data delete operation, error, or some other reason, [- – – -] or [0] will appear on the display.
If the cumulative ascent (ASC) or cumulative descent (DSC) value exceeds 99,999 m (327,995 feet), it will revert to 0 and continue from there.
If you do not perform any operation for about two or three minutes while in the Data Recall Mode, the watch automatically returns to the Timekeeping Mode.

Deleting Data
Note
Data cannot be deleted while a climb record data measurement operation is in progress.
Deleting a Particular Record 1. Enter the Data Recall Mode.
l Navigating Between Modes 2. Use (B) to select the data you want to
delete. If you selected manually recorded data,
use (A) and (C) to select the data you want to delete. 3. Hold down the (E) button for at least two seconds. Release the button as soon as [Clear] stops flashing. This deletes the record you selected.
Note that holding down (E) for at least five seconds while manually recorded data is selected will delete all manually recorded data.
Deleting All Manually Recorded Data 1. Enter the Data Recall Mode.
l Navigating Between Modes 2. Use (B) to select manually recorded data. 3. Hold down (E) for at least five seconds.
Release the button when [Clear] [ALL] stops flashing. This deletes all manually recorded data.

Sunrise and Sunset Times
You can use the procedures in this section to check the sunrise and sunset times for a specified date (year, month, day) and location.
Looking Up Today’s Sunrise and Sunset Times
1. Enter the Sunrise/Sunset Mode. l Navigating Between Modes This displays the current date’s sunrise and sunset times for your Home City.
Month, day
Sunrise time Sunset time

27

Watch Operation Guide 3513

Looking Up Sunrise and Sunset Times by Specifying a Day

1. Enter the Sunrise/Sunset Mode. l Navigating Between Modes
2. Use (A) and (C) to select the day you want. This displays the sunrise and sunset times for the day you specified. Holding down (A) or (C) scrolls through settings at high speed.

Month, day

Sunrise time

Year

Sunset time

Looking Up Sunrise and Sunset Times by Specifying a Location
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display.
Home City

3. Use (A) and (C) to select the city name of the location whose sunrise/sunset times you want to look up.
Holding down (A) or (C) scrolls through settings at high speed.
If you don’t need to specify a latitude and longitude, press (E) twice and advance to step 8.
4. Press (E).
This displays the latitude or longitude setting screen.

5. Press (D) to toggle between the latitude and longitude setting screens.

Latitude screen

Longitude screen

6. Use (A) and (C) to specify an angle Setting ranges are shown below. Latitude: 65.0°S (65.0 degrees south latitude) to 0.0°N to 65.0°N (65.0 degrees north latitude) Longitude: 179.9°W (179.9 degrees west longitude) to 0.0°E to 180.0°E (180.0 degrees east longitude) You can change the setting in 0.1° increments. Holding down (A) or (C) scrolls through settings at high speed.
7. Press (E) to return to the Timekeeping Mode.
8. Press (D). This displays the sunrise/sunset times for the location you specified.
Important!
If you specify a city that is not your Home City as the location when checking sunrise and sunset times, be sure to change back to your Home City setting after you are finished. If you don’t, the watch will not display the correct current time. l Setting a Home City
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.

Stopwatch
The stopwatch performs elapsed time measurement up to 999 hours, 59 minutes, 59.9 seconds in 1/10 second units. It can also measure split times.
Measuring Elapsed Time
1. Enter the Stopwatch Mode. l Navigating Between Modes
2. Use the operations below to measure elapsed time.
A Start A Stop A Resume A Stop Hours
Minutes, seconds, 1/10 seconds
3. Press (C) to reset the stopwatch to all zeros.

28

Watch Operation Guide 3513

Measuring a Split Time
1. Enter the Stopwatch Mode. l Navigating Between Modes
2. Use the operations below to measure elapsed time.
A Start
C Split
C Split release
A Stop
Hours

Timing the First and Second Place Finishers
1. Enter the Stopwatch Mode. l Navigating Between Modes
2. Use the operations below to measure elapsed time.
A Start
C 1st Finisher
A 2nd Finisher

• Displays the time of the first finisher.
  Hours

Timer
The timer counts down from a start time specified by you. A beeper sounds when the end of the countdown is reached. The beeper will not sound if battery power
is low.

Minutes, seconds, 1/10 seconds
3. Press (C) to reset the stopwatch to all zeros.

Minutes, seconds, 1/10 seconds
3. Press (C) to display the time of the second place finisher.
4. Press (C) to reset the stopwatch to all zeros.

Setting a Start Time
The countdown start time can be set in 1minute units up to 24 hours.
1. Enter the Timer Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the hour setting starts to flash.
Hours

3. Use (A) and (C) to change the timer hours setting. Holding down (A) or (C) scrolls through settings at high speed.
4. Press (D). This causes the minutes digits to flash.
Minutes

29

Watch Operation Guide 3513

5. Use (A) and (C) to change the minutes setting.
6. Press (E) to complete the setting operation.
Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.
Setting a start time of “0H00’00” will perform a countdown of 24 hours.
Using the Timer
1. Enter the Timer Mode. l Navigating Between Modes

Other Settings
This section explains other watch settings you can configure.

4. Press (A) to select [key] or [MUTE]. [key]: Operation tone enabled. [MUTE]: Operation tone disabled.

Enabling the Button Operation Tone
Use the procedure below to enable or disable the tone that sounds when you press a button.
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display.
Home City

5. Press (E) twice to complete the setting operation.
[O] is displayed while the operation tone is muted.

2. Use the operations below to perform a timer operation.
A Start
(Countdown starts)
A Pause
A Resume
(Time up)
A beeper will sound for 10 seconds to let you know when the end of a countdown is reached.
You can reset a paused countdown to its start time, by pressing (C).
3. Press any button to stop the tone.

3. Press (D) nine times.
This causes [key] or [MUTE] to flash on the display.

Note
While the setting is being configured, the watch will exit the setting operation automatically after about two or three minutes of non-operation.
Note that alarm and timer tones will still sound even while the operation tone is muted.

30

Watch Operation Guide 3513

Configuring Power Saving Function Settings
1. Enter the Timekeeping Mode. l Navigating Between Modes
2. Hold down (E) for at least two seconds. Release the button when the name of the currently selected Home City appears on the display.
Home City
3. Press (D) 11 times. This displays [POWER SAVING].
4. Press (A) to toggle between on and off. [On]: Power Saving enabled. [OFF]: Power Saving disabled.
5. Press (E) twice to complete the setting operation.
Note While the setting is being configured,
the watch will exit the setting operation automatically after about two or three minutes of non-operation. For details about Power Saving, refer to the information below. l Power Saving Function

Other Information
This section provides non-operational information you also need to know. Refer to this information as required.

City Table

City

Coordinated

UTC

Universal

Time

LIS: LISBON

Lisbon

LON: LONDON

London

MAD: MADRID

Madrid

PAR: PARIS

Paris

ROM: ROME

Rome

BER: BERLIN

Berlin

STO: STOCKHOLM

Stockholm

ATH: ATHENS

Athens

CAI: CAIRO

Cairo

JRS: JERUSALEM

Jerusalem

MOW: MOSCOW

Moscow

JED: JEDDAH

Jeddah

THR: TEHRAN

Tehran

DXB: DUBAI

Dubai

KBL: KABUL

Kabul

KHI: KARACHI

Karachi

DEL: DELHI

Delhi

KTM: KATHMANDU

Kathmandu

DAC: DHAKA

Dhaka

RGN: YANGON

Yangon

BKK: BANGKOK

Bangkok

SIN: SINGAPORE

Singapore

HKG: HONG KONG

Hong Kong

BJS: BEIJING

Beijing

TPE: TAIPEI

Taipei

Offset 0
+1
+2
+3 +3.5 +4 +4.5 +5 +5.5 +5.75 +6 +6.5 +7
+8

City

Offset

SEL: SEOUL TYO: TOKYO

Seoul +9
Tokyo

ADL: ADELAIDE

Adelaide +9.5

GUM: GUAM SYD: SYDNEY

Guam +10
Sydney

NOU: NOUMEA

Noumea

+11

WLG: WELLINGTON

Wellington +12

PPG: PAGO PAGO

Pago Pago -11

HNL: HONOLULU

Honolulu -10

ANC: ANCHORAGE

Anchorage -9

YVR: VANCOUVER LAX: LOS ANGELES

Vancouver -8
Los Angeles

YEA: EDMONTON DEN: DENVER

Edmonton -7
Denver

MEX: MEXICO CITY CHI: CHICAGO

Mexico City -6
Chicago

NYC: NEW YORK

New York -5

SCL: SANTIAGO

Santiago -4

YHZ: HALIFAX

Halifax

-4

YYT: ST. JOHN’S

St. John’s -3.5

RIO:

Rio de

RIO DE JANEIRO Janeiro

-3

FEN: F. DE NORONHA

Fernando de Noronha

-2

RAI: PRAIA

Praia

-1

The information in the above table is current as of January 2022.

Time zones may change and UTC differentials may become different from those shown in the table above.

31

Watch Operation Guide 3513

Specifications
Accuracy : ±15 seconds a month
Basic Functions : Hour, minute, second, month, day, day of the week Barometric pressure graph a.m./p.m.(P)/24-hour timekeeping Full Auto Calendar (2000 to 2099)
Digital Compass : Measurement range: 0° to 359° Measurement unit: 1° Continuous Bearing Measurement (1 minute) Compass calibration (2-point calibration, magnetic declination angle) North, south, east, west indication (fourdirection graphic pointer) Bearing memory
Altimeter (relative altitude) : Measuring range: -700 to 10,000 m (or -2,300 to 32,800 ft.) Display range: -10,000 m to 10,000 m (or -32,800 to 32,800 ft.) (Altitude calibration can be used to display any 10,700 m within the range above.) Measuring unit: 1 m (or 5 ft.) Measuring interval: 2 minutes/5 seconds Altitude calibration Altitude graph Altitude differential measurement: -3,000 to +3,000m (or -9,840 to 9,840 ft.) Reference altitude setting Altitude Memory Manually Recorded Data Recording of altitude, date (month, day), and time by button operation. Up to 30 records. Auto Record Data One record of high altitude, low altitude, cumulative ascent, cumulative descent Climb Record Data Up to 14 records of high altitude, low altitude, cumulative ascent, cumulative descent

Barometer : Measurement range: 260 to 1,100 hPa (or 7.65 to 32.45 inHg) Display range: 260 to 1,100 hPa (or 7.65 to 32.45 inHg) Measurement unit: 1 hPa (or 0.05 inHg) Barometric pressure adjustment Barometric pressure graph Barometric pressure differential graphic Barometric pressure change indications
Temperature : Measuring range: -10.0 °C to 60.0 °C (or 14.0 °F to 140.0 °F) Display range: -10.0 °C to 60.0 °C (or 14.0 °F to 140.0 °F) Measuring unit: 0.1 °C (or 0.2 °F) Temperature Correction
Sensor Accuracy : Direction Measurement accuracy: Within ±10° Accuracy guaranteed temperature range: 10 °C to 40 °C (50 °F to 104 °F) Bearing graph within ±2 gradations Pressure Measurement accuracy: Within ±3 hPa (0.1 inHg) (Altimeter measurement accuracy: Within ±75 m (246 ft.)) Guaranteed accuracy temperature range: -10 °C to 40 °C (14 °F to 104 °F)
Strong impact or prolonged exposure to temperature extremes may negatively affect accuracy.
Temperature Measurement accuracy: Within ±2 °C (3.6 °F) Accuracy guaranteed temperature range: -10 °C to 60 °C (14 °F to 140 °F)
Sunrise/Sunset Functions : Sunrise and sunset times Day select
Stopwatch : Measuring unit: 1/10 seconds Measuring range 999 hours, 59 minutes, 59.9 seconds (1000 hours) Measurement Functions Elapsed time, cumulative time, split times, 1st and 2nd place finisher times
Timer : Setting unit: 1 minute Countdown range: 24 hours Countdown unit: 1 second Time up alert duration: 10 seconds

Alarm : Time alarms Alarms: 5 (with one snooze alarm) Setting units: Hours, minutes Alarm tone duration: 10 seconds Hourly time signal: Beep every hour on the hour
World Time : 48 cities (31 time zones) and Coordinated Universal Time (UTC) Summer time
Other : High-brightness LED light (Full Auto Light, afterglow, 1.5 or 3-second illumination duration setting), power saving, battery power indicator, operation tone on/off
Power Supply : Solar panel and one rechargeable battery Battery operating time: Approximately 7 months Conditions: Illumination: 1.5 seconds/day Beeper: 10 seconds/day Digital Compass Operations: 20 times/ month Mountain climbing: Once/month (Altitude readings: Approximately 1 hour; Barometric pressure change indication measurements: Approximately 24 hours) Barometric Pressure Graph: Measurement every 2 hours Display: 18 hours/day
Specifications are subject to change without notice.

32

Watch Operation Guide 3513

Troubleshooting
Altitude Measurement
Q1 Readings produce different results at the same location. Watch readings are different from altitude information available from other sources. Correct altitude readings are not possible.
Relative altitude is calculated based on changes in barometric pressure measured by the watch’s pressure sensor. This means that barometric pressure changes can cause readings taken at the same location to be different. Also note that the value displayed by the watch may be different from the actual elevation and/or sea level elevation indicated for the area where you are located. When using the watch’s altimeter while mountain climbing, it is recommended that you regularly calibrate its readings in accordance with local altitude (elevation) indications. l Calibrating Altitude Readings (Offset)
Q2 [ERR] appears during measurement.
There may be a problem with the sensor. Try taking another measurement. If [ERR] keeps appearing after multiple measurement attempts, contact a CASIO service center or your original retailer.

Digital Compass
Q1 The entire display is flashing.
Abnormal magnetism has been detected. Move away from any potential source of strong magnetism and try taking a reading again. l Digital Compass Reading Precautions If the display flashes again, it could mean
that the watch itself has become magnetized. Move away from any potential source of strong magnetism, perform 2point calibration, and then try taking a reading again. l Calibrating Compass Readings
Q2 [ERR] appears during measurement.
There is a problem with the sensor or there may be a source strong magnetic force nearby. Move away from any potential source of strong magnetism and try taking a reading again. If [ERR] keeps appearing after multiple measurement attempts, contact a CASIO service center or your original retailer. l Digital Compass Reading Precautions
Q3 [ERR] appears following 2-point calibration.
[ERR] on the display could indicate a sensor problem. If [ERR] disappears after about one second,
try performing 2-point calibration again. If [ERR] keeps appearing after multiple
attempts, contact a CASIO service center or your original retailer.
Q4 Direction information indicated by the watch is different from that indicated by a backup compass.
Move away from any potential source of strong magnetism, perform 2-point calibration, and then try taking a reading again. l Calibrating Compass Readings l Digital Compass Reading Precautions
Q5 Readings at the same location produce different results. Cannot take readings indoors.
Move away from any potential source of strong magnetism and try taking a reading again. l Digital Compass Reading Precautions

Barometric Pressure Measurement
Q1 The barometric pressure differential graphic is not displayed after barometric pressure measurement.
The barometric pressure differential graphic is not displayed if the barometric pressure measurement value exceeds the allowable measurement range (260hPa to 1,100hPa) or if the barometric pressure differential exceeds ±10hPa. If [ERR] is displayed, there may be a problem with the sensor. l Checking the Change Between Two
Barometric Pressure Readings (Barometric Pressure Differential)
Q2 [ERR] appears during measurement. There may be a problem with the sensor. Try taking another measurement. If [ERR] keeps appearing after multiple measurement attempts, contact a CASIO service center or your original retailer.
Temperature Measurement
Q1 [ERR] appears during measurement. There may be a problem with the sensor. Try taking another measurement. If [ERR] keeps appearing after multiple measurement attempts, contact a CASIO service center or your original retailer.
World Time
Q1 The time for a World Time City is not correct.
The summer time setting (standard time/ summer time) may be wrong. l Specifying a World Time City

33

Watch Operation Guide 3513

Alarm and Hourly Time Signal
Q1 An alarm does not sound.
Is the watch’s battery charged? Keep the watch exposed to light until it recharges sufficiently. l Charging
Other than the above. The alarm’s settings may not be configured. Configure the alarm settings. l Configuring Alarm Settings
Q2 The hourly time signal does not sound.
Is the watch’s battery charged? Keep the watch exposed to light until it recharges sufficiently. l Charging
Other than the above. The hourly time signal may be disabled. Enable the hourly time signal. l Configuring the Hourly Time Signal Setting

Charging
Q1 The watch does not work even though it is exposed to light.
The watch stops operating whenever the battery goes dead. Keep the watch exposed to light until it recharges sufficiently. l Checking the Charge Level
Q2 [H], [M], and [L] are flashing on the display.
The watch is in the charge recovery mode. Wait until the recovery process is complete (about 15 minutes). The watch will recover more quickly if you place it in a brightly lit location. If an alarm, hourly time signal, illumination
and/or other power-intensive functions are used within a short period of time, the charging capacity of the battery will drop and cause the watch to go into a charge recovery mode. Function availability will be temporarily limited, but functionality will return after the battery recovers. l Checking the Charge Level

Q3 [CHG] is flashing on the display.
The charge level of the watch is extremely low. Immediately expose the watch to light to charge it. l Checking the Charge Level

Other
Q1 I can’t find the information I need here.
Visit the website below. https://world.casio.com/support/

34

References

• Support | CASIO

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