CASIO 5544 Male Watch Instruction Manual

: June 13, 2024
: Casio

Table of Contents

5544 Male Watch
Product Information
Contents
Watch Face Items
- Product Usage Instructions
Connecting with a Phone
Adjusting the Time Setting

5544 Male Watch

Product Information

Product Name: MA2303-EF

Operation Guide: 5544

Basic Operations
Watch Face Items
Navigating Between Modes
Mode Overview
Using the Crown
Hand and Day Indicator Movement
Solar Charging
Connecting with a Phone
Adjusting the Time Setting
Connecting with a Phone to Adjust the Watch’s Time
Time Adjustment Using a Time Calibration Signal
Overview Appropriate Signal Reception Location
Time Calibration Signal Reception Ranges
Auto Time Calibration Signal Receive
Manual Time Calibration Signal Receive
Signal Reception Precautions
Checking the Last Time Adjustment Result
Using the Watch in a Medical Facility or Aircraft
Using Mobile Link with a Mobile Phone
Connection Connecting with a Phone
Canceling a Connection with a Phone
Using the Watch in a Medical Facility or Aircraft Unpairing If
you purchase another phone
Configuring World Time Settings
Adjusting Hand and Day Indicator Alignment
Phone Finder Configuring Watch Settings
Changing the Home City Summer Time Setting Checking the Watch
Charge Level
Adjusting Time Settings Manually
Setting a Home City Adjusting the Time and Day Setting
Configuring the Summer Time Setting (Home City)
World Time
Specifying a World Time City Configuring the Summer Time
Setting (World Time) Swapping Your Home Time and World Time
Stopwatch
Measuring Elapsed Time
Timer
Setting the Timer Start Time Using the Timer
Alarm
Configuring Alarm Settings Enabling/Disabling the Alarm
Stopping an Alarm
Illumination Light
Turning On the Illumination Light
Adjusting Hand and Day Indicator Alignment
Moving to Another Time Zone
Other Information
City (Time Zone) List Summer Time Table Supported Phone Models
Specifications Mobile Link Precautions Copyrights and Registered
Copyrights
Troubleshooting

Watch Face Items

A: Day of week – Indicates the day of the week in the Home City
in Timekeeping Mode.
B: Battery level – Indicates the current charge level after
entering the Timekeeping Mode.
C: [ST] – In Stopwatch Mode, indicates the mode hand points to
[ST].
D: [TR] – In Timer Mode, indicates the mode hand points to
[TR].
E: [AL] – In Alarm Mode, indicates the mode hand points to
[AL].
F: Summer time setting – Indicates the current summer time
setting.
G: Connection mark – The second hand points to this mark while
there is a connection between the watch and a phone.
H: [RC] – The second hand points to [RC] while calibration
signal reception is in progress.
I: Alarm on/off setting – In Alarm Mode, the second hand
indicates if the alarm is enabled or disabled. [ON]: Alarm enabled
[OFF]: Alarm disabled.
J: Last auto time adjustment result – The second hand points to
[Y(YES)] or [N(NO)] to indicate the result of the last auto time
adjustment operation based on time signal reception or connection
with a phone. [Y(YES)]: Last time adjustment operation successful.
[N(NO)]: Last time adjustment operation failed.

Product Usage Instructions

Connecting with a Phone

To connect the watch with a phone:

Make sure your phone’s Bluetooth is turned on.
Open the mobile app on your phone.
In the mobile app, select “Connect Watch” or a similar
option.
On the watch, navigate to the “Connecting with a Phone”
mode.
Follow the on-screen instructions on both the watch and the
mobile app to complete the connection process.

Adjusting the Time Setting

To adjust the time setting on the watch:

In Timekeeping Mode, press and hold the crown button until the
seconds start flashing.
Use the crown button to navigate through the different time
components (hours, minutes, seconds).
To increase a value, rotate the crown button clockwise. To
decrease a value, rotate it counterclockwise.
After adjusting all the desired time components, press the
crown button to save the changes.

Note: It is recommended to adjust the time setting using a time
calibration signal for accurate timekeeping.

MA2303-EF

© 2018 CASIO COMPUTER CO., LTD.
Operation Guide 5544

Contents
Basic Operations
Watch Face Items Navigating Between Modes Mode Overview Using the Crown Hand and Day Indicator Movement Solar Charging Connecting with a Phone
Adjusting the Time Setting
Connecting with a Phone to Adjust the Watch’s Time Time Adjustment Using a Time Calibration Signal
Overview Appropriate Signal Reception Location Time Calibration Signal Reception Ranges Auto Time Calibration Signal Receive Manual Time Calibration Signal Receive Signal Reception Precautions Checking the Last Time Adjustment Result Using the Watch in a Medical Facility or Aircraft

Using Mobile Link with a Mobile Phone
Connection Connecting with a Phone Canceling a Connection with a Phone Using the Watch in a Medical Facility or Aircraft Unpairing If you purchase another phone
Configuring World Time Settings Adjusting Hand and Day Indicator Alignment Phone Finder Configuring Watch Settings Changing the Home City Summer Time Setting Checking the Watch Charge Level
Adjusting Time Settings Manually
Setting a Home City Adjusting the Time and Day Setting Configuring the Summer Time Setting (Home City)
World Time
Specifying a World Time City Configuring the Summer Time Setting (World Time) Swapping Your Home Time and World Time

Stopwatch
Measuring Elapsed Time
Timer
Setting the Timer Start Time Using the Timer
Alarm
Configuring Alarm Settings Enabling/Disabling the Alarm Stopping an Alarm
Illumination Light
Turning On the Illumination Light
Adjusting Hand and Day Indicator Alignment
Adjusting Hand and Day Indicator Alignment
Moving to Another Time Zone
Other Information
City (Time Zone) List Summer Time Table Supported Phone Models Specifications Mobile Link Precautions Copyrights and Registered Copyrights

Troubleshooting

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Operation Guide 5544

Basic Operations
This section provides an overview of the watch and its operations.
Note
The illustrations included in this operation guide have been created to facilitate explanation. An illustration may differ somewhat from the item it represents.

Watch Face Items

ADay of week In the Timekeeping Mode, the mode hand points to the day of the week in the Home City.
BBattery level The current charge level is indicated by the mode hand after you enter the Timekeeping Mode.
C[ST] In the Stopwatch Mode, the mode hand points to [ST].
D[TR] In the Timer Mode, the mode hand points to [TR].
E[AL] In the Alarm Mode, the mode hand points to [AL].
FSummer time setting The mode hand points to the current summer time setting.
Ge The second hand points to this mark while there is a connection between the watch and a phone.
H[RC] The second hand points to [RC] while calibration signal reception is in progress.
IAlarm on/off setting In the Alarm Mode, the second hand indicates if the alarm is enabled or disabled. [ON]: Alarm enabled [OFF]: Alarm disabled

JLast auto time adjustment result The second hand points to [Y(YES)] or [N(NO)] to indicate the result of the last auto time adjustment operation based on time signal reception or connection with a phone. [Y(YES)]: Last time adjustment operation successful. [N(NO)]: Last time adjustment operation failed.
Navigating Between Modes
Press (C) to cycle between modes.
In any mode, hold down (C) for about one second to enter the Timekeeping Mode.
Day of week

Mode hand Charge level
Timekeeping Mode

$ Alarm Mode

30
$
Stopwatch Mode

Timer Mode

$

Connecting with a Phone Hold down (C) for about four seconds to establish a connection with a phone. To disconnect, press any button.

Before connection

Connected

$

30

Any button

Mode Overview
Timekeeping Mode The main hour, minute, and second hands indicate the current time. The small hour and minute hands indicate the current World Time.

30
Last Time Adjustment Result
ACurrent location time (24-hour time) One revolution every 24 hours.
BDay of the week at current location
CWorld Time hour
DWorld Time minute
EWorld Time hour (24-hour time) The hand points to the A-side for a.m. times, and to the P-side for p.m. times.
Checking the Last Time Adjustment Result Press (B). l Checking the Last Time Adjustment Result
Connecting with a Phone to Adjust the Watch’s Time Hold down (B) for about 0.5 seconds. Release the button as soon as the second hand moves from [Y/N] to e.
Time Adjustment Using a Time Calibration Signal Hold down (B) for about 1.5 seconds. Release the button as soon as the second hand moves from e to [RC].
Phone Finder Hold down (B) for about 3.5 seconds. Release the button as soon as the second hand moves from [RC] to e.
Swapping the Current Location Time and World Time Hold down (A) for about three seconds.
Checking the Charge Level Immediately after you press (C) to return to the Timekeeping Mode, you can check the battery charge level by noting the mode hand position. l Checking the Charge Level

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Operation Guide 5544

Stopwatch Mode
The second hand, and the small hour and minute hands indicate the elapsed stopwatch time.
The main hour and minute hands indicate the current time.
Start/Stop

Alarm Mode
The small hour and minute hands indicate the alarm time. The second hand indicates the alarm enabled/ disabled setting.
The main hour and minute hands indicate the current time.

Important!
To prevent loss of water resistance and/or damage due to impact, be sure to screw the crown in by rotating it away from you as you push it in.
Screw in

30

Reset

AStopwatch seconds
BStopwatch hours
CStopwatch minutes
DStopwatch hours (24-hour time) The hand points to the A-side for hours 0 through 12, and to the P-side for hours 12 through 24.
Timer Mode The second hand, and the small hour and minute hands indicate the current countdown time. The main hour and minute hands indicate
the current time.
Start/Stop

30

Reset

ATimer seconds
BTimer hours
CTimer minutes
DTimer hours (24-hour time) The hand points to the A-side for hours 0 through 12, and to the P-side for hours 12 through 24.

30

Enabling/ Disabling the Alarm

AAlarm enabled/disabled
BAlarm hour
CAlarm minute
DAlarm hour (24-hour time) The hand points to the A-side for a.m. times, and to the P-side for p.m. times.

Using the Crown
The watch’s crown is a screw-in (screw lock) type. To use the crown, you first need to rotate it towards you (leftwards) to loosen it.
Crown

Loosen
Pulling Out and Pushing In the Crown To perform a crown operation, pull it out to the first or second click and then rotate it. Do not pull the crown with too much force. First click
Normal timekeeping
Second click

When pushing the crown back in, take care not to apply too much force.
Fast Forward/Fast Reverse After pulling out the crown, rotating it quickly in succession in either direction will cause the hands to move forward or back at high speed. While the hands are moving forward at high speed, quickly rotating the crown in succession again will increase the speed even further. Stopping Fast Forward/Fast Reverse Rotate the crown in the direction opposite that of the ongoing operation or press any button.
Note
If you do not perform any operation for about two minutes after pulling out the crown, crown operations will automatically become disabled. If that happens, push the crown back in and then pull it out again.
Hand and Day Indicator Movement
Mode hand
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Day indicator
Mode Hand and Day Indicator Movement
Changing the day setting of the watch will also cause the mode hand to move.
Day It can take anywhere from about 10 to 40
seconds for the day indicator to change after timekeeping reaches midnight. The mode hand moves as the day indicator changes. The day may not be indicated correctly while the watch’s crown is pulled out.

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Operation Guide 5544

Solar 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!
Depending on light intensity and local conditions, the watch may become hot to the touch when exposed to light for charging. Take care to avoid burn injury after charging. Also, avoid charging the watch under hightemperature conditions like the ones described below. On the dashboard of a vehicle parked in the sun Near an incandescent light bulb or other source of heat Under direct sunlight or in other hot areas for long periods

Checking the Charge Level Immediately after you press (C) to return to the Timekeeping Mode, the mode hand will indicate the battery charge level. After a short while, the mode hand will indicate the current day of the week.

30
AGood (high charge) BGood (medium charge) CLow Battery Remaining Charge and Dead Battery You can determine if the charge level is low by checking the hand movement. Functions become disabled as battery power goes low.
Important! Should the battery go low or go dead,
expose the face (solar panel) to light as soon as possible.
Low Battery Power The second hand jumps at two-second intervals.
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Second hand
Dead Battery All hands and the day indicator are stopped.

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
8 minutes 30 minutes 48 minutes
8 hours

Charge Recovery Times Sunny day, outdoors (50,000 lux)

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

2 hours 17 hours 5 hours

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

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

5 hours 62 hours 17 hours

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

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

8 hours 100 hours 27 hours

Indoor fluorescent lighting (500 lux)

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

87 hours –

Note

Actual charging time depends on the charging environment, watch settings, and other factors.

1
Note
Exposing the watch face to light after the battery goes dead will cause the second hand to revolve counterclockwise until it stops at second 57. This indicates charging has started.
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Operation Guide 5544

Power Saving Leaving the watch in a dark location for about one hour between the hours of 10 p.m. and 5:50 a.m. will cause the second hand to stop, and the watch to enter Level 1 power saving. If the watch is left in this condition for six or seven days, all hands will stop and the watch will enter Level 2 power saving.
Level 1 : Basic timekeeping functions are operational.
Level 2 : Only the day indicator is operational.
Note
Note that the watch also may enter the power saving state if its face is blocked from light by your sleeve while you are wearing it.
The watch will enter power saving from the Timekeeping Mode only.
Recovering from Power Saving Operation
Press any button, perform a crown operation, or place the watch in a well-lit area to recover from power saving.

Connecting with a Phone
To connect the watch with a phone, first install the CASIO “CASIO WATCHES” app on the phone and then use Bluetooth to pair the watch with the phone.
A Install the app on your phone. In Google Play or the App Store, search for the “CASIO WATCHES” phone app and install it on your phone.
B Configure Bluetooth settings. Enable the phone’s Bluetooth.
Note
For details about setting procedures, see your phone documentation.
C Pair the watch with a phone. Before you can use the watch in combination with a phone, you first need to pair them.
1. Move the phone to be paired with close to (within one meter of) the watch.
2. Y Tap the “CASIO WATCHES” icon.
3. Y Tap the of the “My Watch” tab.
4. Y Perform the operation shown on the phone screen to register the watch to the CASIO WATCHES phone app.
5. X Hold down (C) for about four seconds until the second hand points to e. When a connection is established between the watch and phone, the second hand moves to e. If pairing fails for some reason, perform the procedure again from step 1.
Bluetooth mark

Adjusting the Time Setting
Your watch can receive time signals and connect with a phone to obtain information that it uses to adjust its date and time setting.
Important!
Disable auto time adjustment whenever you are inside an aircraft or in any other area where radio wave reception is prohibited or restricted. l Using CASIO WATCHES to Configure Settings l Using Watch Operations to Configure Settings
Connecting with a Phone to Adjust the Watch’s Time
You can configure watch settings to connect with a phone at preset times each day and adjust its time settings in accordance with information obtained from an online time server.
Using This Function Your watch adjusts its time setting four times a day according to a preset schedule. If you leave your watch in the Timekeeping Mode, it will perform the adjustment operation automatically as you go about your daily life, without any operation required by you.
12:30

Note
The first time you start up CASIO WATCHES phone app, a message will appear on your phone asking if you want to enable location information acquisition. Configure settings to allow background use of location information.

Important!
The watch may not be able to perform auto time adjustment under the conditions described below. While the watch is too far away from its paired phone While communication is not possible due to radio interference, etc. While the phone is updating its system While CASIO WATCHES is not running on the phone

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Operation Guide 5544

Note
The watch will connect with the phone and perform auto time adjustment at around 12:30 a.m., 6:30 a.m., 12:30 p.m. and 6:30 p.m. The connection is automatically terminated after auto time adjustment is complete.
Triggering Immediate Time Adjustment The watch will synchronize its time setting with that of an online time server whenever a connection is established between it and a phone. Perform the operation below to connect the watch with a phone whenever you want to have the watch’s time setting synchronized with that of an online time server.
1. Hold down (B) for about 0.5 seconds. Release the button as soon as the second hand points to e. When the watch connects with a phone, the second hand will move to [Y(YES)], and then the watch’s time setting will be synchronized with that of an online time server. The connection is terminated automatically after time adjustment is complete.
30
Note
If the watch time is adjusted by connection with a phone, the watch’s Home City setting will change to the city that is being used for the phone’s time setting. If summer time is in effect in the city being used for the phone’s time setting, the watch’s time setting will also become summer time.
If the watch does not indicate the correct time even if it is able to connect with a phone, adjust the hand and day indicator positions. l Adjusting Hand and Day Indicator Alignment
If there is a World Time City specified with CASIO WATCHES, its time will also be adjusted automatically.

Time Adjustment Using a Time Calibration Signal
Overview
The watch’s time and day settings can be adjusted in accordance with a received time signal.
Important!
In order to make it possible for the current time setting to be adjusted correctly based on time calibration signal reception, you need to specify the time zone where you are using the watch.
If the watch was unable to connect with a phone even once for time adjustment during the previous day while connection with a phone is being used, it will automatically try to receive a time calibration signal.
Note
Areas where time calibration signal reception is supported are limited. When the watch is in an area where time calibration signal reception is not possible, connect with a phone to adjust time and day settings. l Time Calibration Signal Reception Ranges
If the watch does not indicate the correct time even after it receives a time calibration signal, correct the hand and day indicator positions. l Using CASIO WATCHES to Correct Hand Positions l Using Watch Operations to Correct Hand Positions

Appropriate Signal Reception Location A time calibration signal can be received while the watch is near a window. Keep metal objects away from the watch. Do not move the watch. Do not perform any operation on the watch.
6 o’clock position
Note
You may experience time calibration signal reception problems in the areas described below. Among or near buildings While riding in a vehicle Near household appliances, office machines, mobile phones, etc. On a construction site, in an airport, or any other location where radio wave interference occurs Near high-voltage lines In mountainous areas or behind a mountain

6

Operation Guide 5544

Time Calibration Signal Reception Ranges
Japan (JJY) The Japan time signal radio stations are located on Mt. Otakadoya in Fukushima and Mt. Hagane in Fukuoka/Saga. The reception range of the Japanese time signals is approximately 1,000 km from each transmission station.
China (BPC) The China time signal radio station is located in Shangqiu, Henan Province, China. The reception range of the Chinese time signal is approximately 1,500 km from the transmission station.
United States (WWVB) The United States time signal radio station is located in Fort Collins, Colorado. The reception range of the U.S. time signal is approximately 3,000 km from the transmission station.
U.K. (MSF)/Germany (DCF77) The U.K. time signal radio station is located in Anthorn, Cumbria. The German time signal radio station is located in Mainflingen, southeast of Frankfurt. The reception range of the U.K. and German time signals is approximately 1,500 km from each transmission station.
Note
Even if you are within the normal reception range of a time calibration signal, reception may be made impossible by the following factors: geographic contours, weather, the season, the time of day, wireless noise.

Auto Time Calibration Signal Receive An automatic time calibration signal receive operation is performed and the time and day settings are adjusted between midnight and 5:00 a.m. Once a signal receive operation is successful, no more auto receive operations are performed that day. Getting Ready Enter the Timekeeping Mode. l Navigating Between Modes
30
Place the watch near a window or some other location appropriate for signal reception. The second hand points to [RC] while time
calibration reception in progress. When the receive operation is successful,
the time and day settings will be adjusted automatically.
Note
Reception takes anywhere from about two minutes to about 10 minutes. It can take as long as 20 minutes.
If the watch connects with a phone and adjusts its time setting, the watch will not perform auto receive of a time calibration signal for the rest of that day or the next day.

Manual Time Calibration Signal Receive
1. Place the watch near a window or some other location appropriate for time signal reception.
2. Enter the Timekeeping Mode. l Navigating Between Modes
3. Hold down (B) for about 1.5 seconds until the second hand points to [RC]. This indicates that the receive operation has started. After the receive operation is complete, the watch’s time and day settings will be adjusted accordingly.
30
Note
Reception takes anywhere from about two minutes to about 10 minutes. It can take as long as 20 minutes.
Time calibration signal reception is better at night than during the day.
Signal Reception Precautions When the watch is unable to adjust its time
in accordance with a calibration signal for some reason, average timekeeping accuracy is within ±15 seconds per month. Note that an internal decoding process the watch performs after it receives a signal may cause the time setting to be slightly off (by less than one second). Time calibration signal reception is not possible under the conditions described below. While battery power is low While in the Stopwatch Mode At Power Saving Level 2 While the crown is pulled out While the Home City setting is one where
time signal reception is not possible While the watch is outside the time signal
reception range As of January 2018, China does not
observe summer time. If China starts to observe summer time in the future, the time displayed by the watch for China may not be correct.

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Operation Guide 5544

Checking the Last Time Adjustment Result
1. Enter the Timekeeping Mode. l Navigating Between Modes
30
2. Press (B). The second hand points to the result of the last auto time adjustment operation. The watch hands will return to indicating the current time if you do not perform any operation for nine or ten seconds. [Y(YES)]: Last time adjustment operation successful. [N(NO)]: Last time adjustment operation failed.
Second hand
30
Note
Even if there was a successful time calibration signal receive operation or connection with a phone, the second hand will point to [N(NO)] if you adjusted the time and/or date setting manually.

Using the Watch in a Medical Facility or Aircraft
Whenever you are in a hospital, on an aircraft, or in any other location where auto time calibration signal receive or connection with a phone may cause problems, you can perform the procedure below to disable such operations. To re-enable auto time adjustment, perform the same operation again. 1. Enter the Timekeeping Mode.
l Navigating Between Modes
30
2. Press (B). The second hand will indicate the last receive result for nine or ten seconds.
30
3. Within 10 seconds after pressing (B) above, pull out the crown to the first click. If more than 10 seconds elapse before you pull out the crown after you perform the operation in step 2, the second hand will return to indicating seconds. If this happens, perform step 2 again.
4. Rotate the crown to disable auto time adjustment. [Y(YES)]: Auto time adjustment enabled. [N(NO)]: Auto time adjustment disabled.

Using Mobile Link with a Mobile Phone
While there is a Bluetooth connection between the watch and phone, the watch time setting is adjusted automatically. You can also change the watch’s other settings.
Note
This function is available only while CASIO WATCHES is running on the phone.
This section describes watch and phone operations. X : Watch operation Y : Phone operation
Connection
Connecting with a Phone
This section explains how to establish a Bluetooth connection with a phone that is paired with the watch. If the watch is not paired with the phone you
want to connect with, refer to the information below and pair them. l C Pair the watch with a phone.
1. Move the phone close to (within one meter of) the watch.
2. X While the second hand is not pointing to e, hold down (C) for about four seconds. This causes the second hand to move to e and establishes a connection between the watch and phone.

30
Crown
5. Push the crown back in.
Note
If the watch is paired with a phone, CASIO WATCHES can be used to disable auto time adjustment. l Using CASIO WATCHES to Disable Auto Time Adjustment

Important!
If you have problems establishing a connection, it could mean that CASIO WATCHES is not running on the phone. On the phone’s home screen, tap the “CASIO WATCHES” icon. After the app starts up, hold down the watch’s (C) button for about four seconds.
8

Operation Guide 5544

Note
The connection will be terminated if you do not perform any operation on the watch or phone for a fixed amount of time. To specify the connection limit time, perform the following operation with CASIO WATCHES: “Watch settings” n “Connection time with the app”. Next, select a setting of 3 minutes, 5 minutes, or 10 minutes.

Canceling a Connection with a Phone
Pressing any button terminates the Bluetooth connection and returns the second hand to its normal operation.

Connected

Disconnected

Unpairing

1. X If the watch is connected with a phone, press any button to terminate the connection.

Connected

Disconnected

30

2. Y Tap the “CASIO WATCHES” icon.
3. Y Perform the operation shown on the phone screen to unpair.
If you purchase another phone
You need to perform the pairing operation whenever you want to establish a Bluetooth connection with a phone for the first time. l C Pair the watch with a phone.

To select a World Time City 1. Y Tap the “CASIO WATCHES” icon. 2. X Hold down (C) for about four seconds.
This causes the second hand to move to e and establishes a connection between the watch and phone.
3. Y Perform the operation shown on the phone screen. The World Time setting will be reflected on the watch. You can determine whether a World Time is a.m. or p.m. by checking the position of the small 24-hour hand.

30

Using the Watch in a Medical Facility or Aircraft
Whenever you are in a hospital, on an aircraft, or in any other location where auto time calibration signal receive or connection with a phone may cause problems, you can perform the procedure below to disable such operations. To re-enable auto time adjustment, perform the same operation again.
1. Y Tap the “CASIO WATCHES” icon.
2. X Hold down (C) for about four seconds. This causes the second hand to move to e and establishes a connection between the watch and phone.

Configuring World Time Settings
Specifying a World Time City with CASIO WATCHES causes the watch’s World Time City to change accordingly. The standard time/summer time setting of the World Time will be adjusted automatically without any watch operation required by you.
30
Note CASIO WATCHES World Time lets
you select from among approximately 300 cities as the World Time City.

30
World Time hour and minute World Time hour (24-hour)

3. Y Perform the operation shown on the phone screen to enable or disable auto time adjustment.

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Operation Guide 5544

Configuring the Summer Time Setting
1. Y Tap the “CASIO WATCHES” icon.
2. X Hold down (C) for about four seconds. This causes the second hand to move to e and establishes a connection between the watch and phone.

Swapping Your World Time and Home Time
1. Y Tap the “CASIO WATCHES” icon.
2. X Hold down (C) for about four seconds. This causes the second hand to move to e and establishes a connection between the watch and phone.

Adjusting Hand and Day Indicator Alignment
If the hands and/or date indicator are out of alignment even though auto time adjustment is being performed, use CASIO WATCHES to adjust them.
1. Y Tap the “CASIO WATCHES” icon.
2. X Hold down (C) for about four seconds. This causes the second hand to move to e and establishes a connection between the watch and phone.

3. Y Perform the operation shown on the phone screen to select a summer time setting.
“Auto” The watch switches between standard time and summer time automatically.
“OFF” The watch always indicates standard time.
“ON” The watch always indicates summer time.
Note
While the summer time setting is “Auto”, the watch will switch between standard time and summer time automatically. You do not need to switch between standard time and summer time manually. Even if you are in an area that does not observe summer time, you can leave the watch’s summer time setting as “Auto”.
Changing the time setting manually with a watch operation will cancel auto standard time/summer time switching.
CASIO WATCHES screen shows information about summer time periods.

3. Y Perform the operation shown on the phone screen to swap your Home Time with your World Time.
For example, if your Home City is Tokyo and the World Time City is New York, they will be swapped as shown below.

Before swapping
Home City (Tokyo)

After swapping
Home City (New York)

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World Time City (New York)

World Time City (Tokyo)

Note
Auto time adjustment does not work for 24 hours after swapping of the Home Time and World Time.

3. Y Perform the operation shown on the phone screen to correct hand and day indicator alignment.
Note
The movement of some hands are linked with other hands. When correcting the alignment of such a hand, you will have to correct the alignment of the linked hand(s) at the same time.

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Operation Guide 5544

Phone Finder
You can use phone finder to trigger a tone on the phone to make it easy to find. The tone is forced to sound even if the phone is in vibrate mode.
Important!
Do not use this function in areas where phone call tones are restricted.
The tone sounds at a high volume. Do not use this function when listening to phone output over earphones.

Configuring Watch Settings
You can use CASIO WATCHES to specify the amount of time until the Bluetooth connection is automatically terminated, and to configure other watch settings.
1. Y Tap the “CASIO WATCHES” icon.
2. X Hold down (C) for about four seconds. This causes the second hand to move to e and establishes a connection between the watch and phone.

Checking the Watch Charge Level
Use the procedure below to check the current charge level with CASIO WATCHES.
1. Y Tap the “CASIO WATCHES” icon.
2. X Hold down (C) for about four seconds. This causes the second hand to move to e and establishes a connection between the watch and phone.

1. X If the watch is connected with a phone, press any button to terminate the connection.

Connected

Disconnected

30

2. X Hold down (C) for about 2 seconds. This will cause the watch to enter the Timekeeping Mode.
3. X Hold down (B) for about 3.5 seconds until the second hand points to e. A connection will be established between the watch and phone, and then the phone’s ringtone will sound. It will take a few seconds before the phone tone sounds.

4. X Press any button to stop the tone.
You can press any watch button to stop the phone tone, but only during the first 30 seconds after it starts to sound.

3. Y Select the setting you want to change and then perform the operation shown on the phone screen.
Changing the Home City Summer Time Setting
1. Y Tap the “CASIO WATCHES” icon. 2. X Hold down (C) for about four seconds.
This causes the second hand to move to e and establishes a connection between the watch and phone.
3. Y Perform the operation shown on the phone screen to change your Home City summer time setting.

3. Y Use CASIO WATCHES to check the charge level.
Adjusting Time Settings Manually
You can use the procedure below to adjust the watch’s time and day settings when time calibration signal reception or communication with a phone is not possible for some reason.
Setting a Home City
Use the procedure in this section to select a city (time zone) to use as your Home City.
1. Pull out the crown to the second click. The second hand indicates the currently selected Home City time zone, while the mode hand indicates the current summer time setting. If the Home City setting is a city (time zone) that cannot be set on the watch, the second hand will point to .
Summer time setting

30
Home City

Crown

11

Operation Guide 5544

2. Rotate the crown to change the Home City. You can also select a time zone whose name is not indicated on the face of the watch. For details about time zones, refer to the information below. l City (Time Zone) List
3. Push the crown back in to its normal position.
Adjusting the Time and Day Setting
1. Pull out the crown to the second click. The second hand will move to the city code of the currently selected Home City. The mode hand will point to the summer time setting for the currently selected Home City.
Summer time setting

30
Crown
Home City (time zone)

2. Hold down (C) for about one second.
This causes the second hand to move to 12 o’clock, and enables the minute setting operation.

3. Rotate the crown to change the minute setting.

4. Press (C). The hour hand will move slightly, indicating that the hour setting operation is enabled.
5. Rotate the crown to change the hour setting.

6. Press (C). This enables the year ten’s digit setting operation.
7. Rotate the crown to move the second hand to the desired setting for the year ten’s digit.

Year (10’s digit)

8. Press (C).
This enables the year one’s digit setting operation.

9. Rotate the crown to move the second hand to the desired setting for the year one’s digit.

Year (one’s digit)

10. Press (C). This enables the month setting operation.

Month

11. Rotate the crown to change the month.
12. Press (C). The mode hand will move slightly, indicating that the day setting operation is enabled.

30
Day
Changing the day setting will cause the mode hand to rotate repeatedly. l Hand and Day Indicator Movement
13. Rotate the crown to change the day.
14. On a time signal at the top of a minute, push the crown back in.
Note
If the watch does not indicate the correct time even after you adjust it, adjust the hand and day indicator positions. l Using CASIO WATCHES to Correct Hand Positions l Using Watch Operations to Correct Hand Positions

Configuring the Summer Time Setting (Home City)
If you are in an area that observes summer time, you can also configure a summer time setting.
Note
The initial factory default summer time setting for all cities is [AT (AUTO)]. In many cases, the [AT (AUTO)] setting lets you use the watch without switching between summer time and standard time.
When performing a manual operation to select a time zone for which there is no city name displayed, use [STD] or [DST] for the summer time setting.
1. Pull out the crown to the second click. The second hand will move to the city code of the currently selected Home City. The mode hand will point to the summer time setting for the currently selected Home City.
2. Hold down (A) for about one second. Each time you hold down (A) for about one second, the summer time setting will cycle to the next available option.
30
[AT (AUTO)] The watch switches between standard time and summer time automatically.
[STD] The watch always indicates standard time.
[DST] The watch always indicates summer time.
3. Push the crown back in to its normal position.

12

Operation Guide 5544

World Time
World Time lets you look up the current time in any one of 27 cities and 39 time zones around the globe.
30

2. Rotate the crown to change the World Time City (time zone).
The World Time hour and minute hands indicate the current time in the selected time zone.
You can also select a time zone whose name is not indicated on the face of the watch.
For details about time zones, refer to the information below. l City (Time Zone) List
World Time hour (24-hour)

2. Hold down (A) for about one second.
Each time you hold down (A) for about one second, the summer time setting will cycle to the next available option.
[AT (AUTO)] The watch switches between standard time and summer time automatically.
[STD] The watch always indicates standard time.
[DST] The watch always indicates summer time.

Getting Ready
Enter the Timekeeping Mode. l Navigating Between Modes

30

Specifying a World Time City
Use the procedure below to specify the city (time zone) whose time you want to view.
1. Pull out the crown to the first click. The second hand indicates the currently selected World Time City, while the mode hand indicates the World Time City’s summer time setting. If the World Time City setting is a city (time zone) that cannot be set on the watch, the second hand will point to .
World Time City (time zone)

30
Summer time setting

Crown

30
Crown
World Time hour and minute
3. Push the crown back in.
Configuring the Summer Time Setting (World Time)
If you are in an area that observes summer time, you can also configure a summer time setting.
Note
The initial factory default summer time setting for all cities is [AT (AUTO)]. In many cases, the [AT (AUTO)] setting lets you use the watch without switching between summer time and standard time.
When performing a manual operation to select a time zone for which there is no city name displayed, use [STD] or [DST] for the summer time setting.
While [UTC] is selected as the city, you will not be able to change or check the summer time setting.
1. Pull out the crown to the first click. The second hand will point to the currently selected World Time City (time zone). The mode hand will move to the summer time setting of the currently selected World Time City (time zone).

30

3. Push the crown back in to its normal position.

Swapping Your Home Time and World Time

Holding down (A) for about three seconds will swap your Home Time with your World Time.
Pressing (A) will cause illumination to turn on. Keep the button depressed for about three seconds.

Before swapping Home Time

After swapping World Time

30

World Time

Home Time

If a swapping operation causes a change in the day indicator setting, the mode hand will rotate repeatedly. l Hand and Day Indicator Movement
Note
This function comes in handy when you need to move to another time zone. For details about how to use it, go to the section below. l Moving to Another Time Zone

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Operation Guide 5544

Stopwatch
The stopwatch measures elapsed time in units of one second up to 23 hours, 59 minutes, 59 seconds (24 hours). Getting Ready Enter the Stopwatch Mode. l Navigating Between Modes
30
Measuring Elapsed Time
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 is muted in the cases described
below. When battery power is low Getting Ready Enter the Timer Mode. l Navigating Between Modes
30
Setting the Timer Start Time

Using the Timer
1. Press (A) to start the countdown.
30
A beeper sounds for 10 seconds when the end of the countdown is reached. To pause an ongoing countdown, press
(A). To reset a paused countdown to the start time, press (B). 2. Press any button to stop the tone. 3. Press (C) twice to return to the Timekeeping Mode.

30

Seconds

Hour (24-hour time)

Minutes

1. Use the operations below to measure elapsed time.
Start
Stop
Resume
Stop
2. Press (B) to reset the elapsed time to all zeros.
3. Press (C) three times to return to the Timekeeping Mode.

1. Pull out the crown to the first click.
2. Rotate the crown to change the countdown start time setting. The countdown start time can be set in 1-minute units up to 24 hours.
24-hour Seconds

30
Hours Minutes

Crown

3. Push the crown back in.

Note

You can set a countdown start time of 24 hours by aligning the small 24-hour hand with 24.

Alarm
The watch will beep when the alarm time is reached. The beeper is muted in the cases described
below. When battery power is low When watch is at Level 2 power saving
l Power Saving Getting ready Enter the Alarm Mode. l Navigating Between Modes
30

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Operation Guide 5544

Configuring Alarm Settings
1. Pull out the crown to the first click. This turns on the alarm.
2. Rotate the crown to change the alarm time setting.
Alarm on
30
Crown Hours Minutes
3. Push the crown back in. 4. Press (C) once to return to the
Timekeeping Mode. Note A beeper sounds for 10 seconds when
an alarm time is reached.
Enabling/Disabling the Alarm
1. Press (B) to toggle the alarm between on and off.
Alarm on
30
Alarm off
2. Press (C) once to return to the Timekeeping Mode.

Illumination Light
The watch has an LED light that you can turn on for reading in the dark. When you turn on the LED light, it gradually becomes brighter. After about two seconds, it gradually becomes dimmer until it turns off.
Getting ready Enter the Timekeeping Mode or Alarm Mode. l Navigating Between Modes

Timekeeping Mode

Alarm Mode

30

Turning On the Illumination Light
Pressing (A) turns on illumination.

30
Illumination will turn off automatically if an alarm starts to sound.
Illumination is disabled while the hands are moving at high speed.
Note
You can also use CASIO WATCHES to change the illumination duration. l Configuring Watch Settings

Adjusting Hand and Day Indicator Alignment
Strong magnetism or impact can cause the hands and/or the day indicator to go out of alignment. If this happens, adjust hand and day indicator alignment. The watch performs alignment of the hour
hand, minute hand, second hand, and 24hour hand automatically.
Adjusting Hand and Day Indicator Alignment
1. Pull out the crown to the second click.
2. Hold down (B) for about five seconds, until the second hand moves to 12 o’clock. Release the button when the second hand reaches 12 o’clock. This will start auto alignment of the hour hand, minute hand, second hand, and 24hour hand. After auto alignment is complete, the hands should be in the positions shown below.
24-hour hand

Minute hand

Hour hand

30
Crown
Second hand

Stopping an Alarm
While the alarm is sounding, press any button to stop it.

15

Operation Guide 5544

3. Press (C). Confirm that the small hour and minute hands, and the small 24-hour hand are all stopped at 12 o’clock.
Small 24-hour hand
30
Small hour hand Small minute hand
4. If the small hour and minute hands, and the small 24-hour hand are not at 12 o’clock, rotate the crown to align them with 12 o’clock.
5. Press (C). Confirm that the mode hand is stopped at 12 o’clock, and check if the day is indicated properly.
Mode hand
3300
Day (Operation start day)
6. If the mode hand and/or the day indicator is out of alignment, rotate the crown to move the mode hand to 12 o’clock and the day to the center of the indicator window. The movement range of the mode hand and day indicator is limited when you rotate the crown. The maximum leftright movement of the mode hand is 180 degrees in either direction. The day indicator moves only slightly. After the mode hand and day indicator are in the positions you want, advance to step 9 of this procedure. If you are unable to make the adjustments you want, go to step 7.

7. Press (C). Confirm that the day indicator shows “1”.
11
Day
Changing the date setting will cause the mode hand to rotate repeatedly. In some cases, the mode hand may continue to rotate for about 5 minutes. l Hand and Day Indicator Movement
8. If “1” is not shown for the day, rotate the crown until “1” is shown for the day. The mode hand moves in conjunction with crown rotation. Move the mode hand to 12 o’clock.
9. Push the crown back in.
Note
Leaving the crown pulled out for more than approximately 30 minutes without performing any operation will automatically cause the adjustment operation to become disabled. If this happens, push the crown back in to its normal position and then pull it out again to restart the procedure from the beginning. Pushing the crown in to its normal position part way through the alignment procedure will cause the hands to return to their normal position. Any alignment you performed up to that point will be applied.

Moving to Another Time Zone
Use the procedure below to easily change day and time settings of the watch to a destination location. Before Boarding 1. Configure the World Time to the current
time at your destination.
Current time
30
Destination time
l Using CASIO WATCHES to Configure Settings
l Using Watch Operations to Configure Settings
2. Disable auto time adjustment.

30

l Using CASIO WATCHES to Configure Settings
l Using Watch Operations to Configure Settings
After Arriving
1. Swap the origin time zone time with the destination time zone time.

Before swapping

After swapping Destination time

30

Destination time
l Using CASIO WATCHES to Configure Settings
l Using Watch Operations to Configure Settings
2. Enable auto time adjustment. l Using CASIO WATCHES to Configure Settings l Using Watch Operations to Configure Settings

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Operation Guide 5544

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

City (Time Zone) List

You can specify a time zone whose city code is not shown on the face by aligning the second hand with the applicable UTC offset.

City code

City name

Second Hand
Position

Offset

UTC

Coordinated Universal Time

0

LON* London

20

PAR* Paris

4 +1

ATH* Athens

6 +2

JED Jeddah

8 +3

–

9 +3.5

DXB Dubai

10 +4

–

11 +4.5

–

12 +5

DEL Delhi

13 +5.5

–

14 +5.75

DAC Dhaka

15 +6

–

16 +6.5

BKK Bangkok

17 +7

HKG* Hong Kong

19 +8

–

20 +8.5

–

21 +8.75

TYO* Tokyo

22 +9

–

23 +9.5

SYD Sydney

24 +10

–

25 +10.5

NOU Noumea

26 +11

WLG Wellington

28 +12

–

29 +12.75

TBU Nuku’alofa

30 +13

CXI Kiritimati

32 +14

BAR Baker Island

36 -12

PPG Pago Pago

38 -11

HNL Honolulu

40 -10

–

41 -9.5

ANC Anchorage

42 -9

LAX* Los Angeles

44 -8

DEN* Denver

46 -7

CHI* Chicago

48 -6

NYC* New York

50 -5

YHZ* Halifax

52 -4

–

53 -3.5

RIO Rio de Janeiro 54 -3

FEN

Fernando de Noronha

56 -2

RAI Praia

58 -1

Time zones where time calibration signal reception is possible.

The information in the above table is current as of January 2018.

Summer Time Table
When [AT (AUTO)] is selected for a city that observes summer time, switching between standard time and summer time will be performed automatically at the timing shown in the table below.
Note
Summer time start and end dates for your current location may be different from those shown below. If this happens, you can have new summer time information for your Home City and World Time City sent to the watch by connecting the watch with a phone. If the watch is not connected with a phone, you can change the summer time setting manually.

City name

Summer Time Start

Summer Time End

01:00, last

02:00, last

London Sunday in

Sunday in

March

October

02:00, last

03:00, last

Paris

Sunday in

March

October

03:00, last

04:00, last

Athens Sunday in

Sunday in

March

October

Sydney

02:00, first Sunday in October

03:00, first Sunday in April

02:00, last Wellington Sunday in
September

03:00, first Sunday in April

02:00, second 02:00, first

Anchorage Sunday in

Sunday in

March

November

Los Angeles

02:00, second 02:00, first

Sunday in

March

November

02:00, second 02:00, first

Denver Sunday in

Sunday in

March

November

02:00, second 02:00, first

Chicago Sunday in

Sunday in

March

November

02:00, second 02:00, first

New York Sunday in

Sunday in

March

November

02:00, second 02:00, first

Halifax Sunday in

Sunday in

March

November

00:00, third

Rio de Janeiro

00:00, third Sunday in October

Sunday in February or 00:00, fourth Sunday in

February

The information in the above table is current as of January 2018.

Supported Phone Models
For information about supported phone models, visit the CASIO Website. https://world.casio.com/os_mobile/wat/

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Operation Guide 5544

Specifications
Accuracy at normal temperature : ±15 seconds per month average when time adjustment by time calibration signal reception or by communication with a phone is not possible.
Timekeeping : Hour, minute, second, day (2000 to 2099 full auto calendar), day of the week
World Time : Current time in 27 cities (39 time zones), and UTC (Coordinated Universal Time) time Auto summer time setting Home Time swapping
Signal Receive Functions : Time calibration: Auto Receive, manual receive Auto transmitter selection (for JJY, MSF/ DCF77)
Receivable Call Signs : JJY (40kHz/60kHz), BPC (68.5kHz), WWVB (60kHz), MSF (60kHz), DCF77 (77.5kHz)
Last reception result display Automatic and manual switching between standard time and summer time.
Mobile Link : Auto Time Correction Time setting adjusted automatically at preset time One-touch Time Correction Manual connection and time adjustment Phone finder Watch operation sounds the alert sound of the phone. Home Time swapping Auto summer time setting Automatic switching between standard time and summer time Hand alignment correction Data Communication Specifications Bluetooth® Frequency Band: 2400MHz to 2480MHz Maximum Transmission: 0 dBm (1 mW) Communication range: Up to 2 meters (depends on environment)
Stopwatch : Measuring unit: 1 second Measuring capacity: 23:59’59” (24 hours) Measurement function: Elapsed time

Timer : Setting unit: 1 minute Countdown range: 24 hours Measuring unit: 1 second 10-second beeper when the end of the countdown is reached
Alarm : Setting units: Hours, minutes Beeper: 10 seconds
Other : LED light, auto hand position correction, Power Saving, battery indicator
Power Supply : Solar panel and one rechargeable battery
Approximate Battery Life : Approximately 5 months Conditions Auto adjust: 4 times/day Light: 1 operation/day Alarm: 1 operation/day Power Saving: 6 hours/day
Specifications are subject to change without notice.

Mobile Link Precautions
Legal Precautions
This watch complies with or has received approval under the radio laws of various countries and geographical areas. Using this watch in an area where it does not comply with or has not received approval under applicable radio laws may be a criminal offense. For details, visit the CASIO Website. https://world.casio.com/ce/BLE/
Use of this watch inside of aircraft is restricted under the aviation laws of each country. Be sure to follow the instructions of airline personnel.
Precautions when using Mobile Link
When using this watch in combination with a phone, keep the watch and phone close to each other. A range of two meters is recommended as a guideline, but the local environment (walls, furniture, etc.), the structure of a building, and other factors may require a much closer range.
This watch can be affected by other devices (electrical devices, audio-visual equipment, office equipment, etc.) In particular, it can be affected by operation of a microwave oven. The watch may not be able to communicate normally with a phone if a microwave oven is operating nearby. Conversely, this watch may cause noise in radio reception and the video image of a TV.
Bluetooth of this watch uses the same frequency band (2.4 GHz) as wireless LAN devices, and use of such devices in close proximity of this watch may result in radio interference, slower communication speeds and noise for the watch and the wireless LAN device, or even communication failure.

18

Operation Guide 5544

Stopping Radio Wave Emission by This Watch
The watch is emitting radio waves whenever the second hand is pointing to e. Even if the second hand is not pointing at e, the watch will automatically attempt to connect with a phone four times a day to adjust its time settings.
When in a hospital, on an aircraft, or in any other area where the use of radio waves is not allowed, use the operation below to stop radio wave generation.
Stopping Radio Wave Generation Press (C) to terminate the Bluetooth connection.

Connected

Disconnected

30

Disabling Auto Time Adjustment Configure CASIO WATCHES settings to disable synchronization between the watch and phone. l Using CASIO WATCHES to Disable Auto Time Adjustment

Copyrights and Registered Copyrights
The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by CASIO Computer Co., Ltd. is under license.
iPhone and App Store are trademarks of Apple Inc. in the United States and other countries.
iOS is a trademark or registered trademark of Cisco Systems, Inc.
GALAXY, GALAXY Note, and GALAXY S are registered trademarks of Samsung Electronics Co., Ltd.
Android and Google PlayTM are trademarks or registered trademarks of Google LLC.
Other company names and product names used herein are trademarks or registered trademarks of their respective companies.

Troubleshooting
Signal Reception (Time Calibration Signal)
Q1 The watch cannot perform a receive operation.
Is the watch’s battery charged?
Signal reception is not possible while battery power is low. Keep the watch exposed to light until it recharges sufficiently. l Solar Charging
Is the watch in the Timekeeping Mode?
The watch cannot receive time calibration signals while auto adjustment is disabled or while the watch is in a mode other than the Timekeeping Mode. Return to the Timekeeping Mode. l Navigating Between Modes
Is your Home City setting correct for your location?
The watch will not indicate the correct time if the Home City setting is wrong. Change your Home City setting so it correctly reflects your location. l Setting a Home City
After checking the above, the watch still cannot perform a receive operation.
Time calibration signal reception is not possible under the conditions described below. When watch is at Level 2 power saving When the crown is pulled out Timer countdown operation in progress If successful reception is not possible for some reason, you can adjust the time and day settings manually.

Q2 The signal receive operation always fails.
Is the watch in a location that is appropriate for signal reception?
Check your surroundings and move the watch to a location where signal reception is better. l Appropriate Signal Reception Location
Did you avoid touching the watch while the receive operation was in progress?
Minimize movement of the watch and do not perform any watch operation while a receive operation is in progress.
Is there an alarm configured to sound during the same period that the signal receive operation is performed?
Receive stops if an alarm operation starts while it is being performed. Disable the alarm. l Enabling/Disabling the Alarm
Is the signal transmitter in your area transmitting a signal?
The transmitter of the time calibration may not be transmitting a signal. Try again later.
Q3 Signal reception should have been successful, but the watch’s time and/ or day is wrong.
Is the time zone where you are using the watch specified correctly?
Specify the time zone where you are using the watch. l Configuring the Summer Time Setting
(Home City) l Configuring the Summer Time Setting
(World Time)
Is the hand and/or day indicator alignment correct?
Adjust hand and/or day indicator alignment. l Adjusting Hand and Day Indicator
Alignment
After checking the above, the time and/or day settings is still wrong.
Adjust time and day settings manually. l Adjusting Time Settings Manually

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Operation Guide 5544

I can’t pair the watch with a phone.
Q1 I’ve never been able to establish a (pairing) connection between the watch and phone.
Are you using a supported phone model?
Check if the phone model and its operating system are supported by the watch. For information about supported phone models, visit the CASIO Website. https://world.casio.com/os_mobile/wat/
Did you install CASIO WATCHES on your phone?
CASIO WATCHES needs to be installed on your phone in order to connect with the watch. l A Install the app on your phone.
Are your phone’s Bluetooth settings configured correctly?
Configure the phone’s Bluetooth settings. For details about setting procedures, see your phone documentation. iPhone Users “Settings” n “Bluetooth” n On Android Users Enable Bluetooth.
Other than the above.
Some phones need to have BT Smart disabled to use CASIO WATCHES. For details about setting procedures, see your phone documentation. On the Home Screen, tap: “Menu” n “Settings” n “Bluetooth” n “Menu” n “BT Smart settings” n “Disable”.

I can’t reconnect the watch and phone.
Q1 The watch will not re-connect with the phone after they are disconnected.
Is CASIO WATCHES running? The watch cannot re-connect with the phone unless CASIO WATCHES is running on the phone. On the phone’s Home Screen, tap the “CASIO WATCHES” icon. Then on the watch, hold down the MODE button (C) for about four seconds.
30
Have you tried turning your phone off and then back on again?
Turn the phone off and then back on, and then tap the “CASIO WATCHES” icon. Next, on the watch, hold down the MODE button (C) for about four seconds.

Q2 I can’t connect while my phone is in the Airplane Mode.
Connection with the watch is not possible while the phone is in the Airplane Mode. After exiting the phone’s Airplane Mode, go to the phone’s Home Screen and tap the “CASIO WATCHES” icon. Then on the watch, hold down the MODE button (C) for about four seconds.
30
Q3 I changed the phone’s Bluetooth from enabled to disabled, and now I can’t connect anymore.
On the phone, re-enable Bluetooth, and then go to the Home Screen and tap the “CASIO WATCHES” icon. Next, on the watch, hold down the MODE button (C) for about four seconds.
30

30
Is a timer countdown operation in progress?
Connection with a phone is not possible while there is 30 seconds or less remaining on a countdown timer operation. Stop the countdown operation before connecting with the phone.

Q4 I can’t connect after turning off the phone.
Turn on the phone and tap the “CASIO WATCHES” icon. Then on the watch, hold down the MODE button (C) for about four seconds.
30

20

Operation Guide 5544

Phone-Watch Connection
Q1 I can’t establish a connection between the phone and watch.
Have you tried turning your phone off and then back on again?
Turn the phone off and then back on, and then tap the “CASIO WATCHES” icon. Next, on the watch, hold down the MODE button (C) for about four seconds.
30
Has the watch been re-paired with the phone?
After deleting pairing information from CASIO WATCHES, re-pair the watch and phone. l Unpairing
If you are unable to establish a connection…
Use the procedure below to delete the pairing information from the watch, and then re-pair the watch and phone. APull out the crown to the second click. BHold down (B) for about 10 seconds.
This deletes the pairing information. The second hand will point to e. CPush the crown back in.
Changing to a Different Phone Model
Q1 Connecting the current watch to another phone.
Pair the watch with the phone. l If you purchase another phone

Auto Time Adjustment by Bluetooth Connection (Time Adjustment)
Q1 When does the watch adjust its time?
The watch will connect with the phone and perform auto time adjustment at around 12:30 a.m., 6:30 a.m., 12:30 p.m. and 6:30 p.m. The connection is automatically terminated after auto time adjustment is complete.
Q2 Auto time adjustment is not performed at a scheduled time.
Is auto time adjustment not being performed according to its normal schedule?
Note that auto time adjustment is not performed for 24 hours after swapping of the Home Time and World Time, or after the time setting is adjusted manually on the watch. Auto time adjustment will resume 24 hours after either of the above operations is performed.
Is auto time adjustment enabled?
Auto time adjustment will not be performed at the scheduled times unless it is enabled. Enable auto time adjustment. l Using CASIO WATCHES to Configure
Settings l Using Watch Operations to Configure
Settings
Q3 Time is not displayed correctly.
The phone’s time setting may be incorrect because it is unable to connect with its network due to being out of range, etc. If this happens, connect the phone to its network and then adjust the time setting.

Alarm
Q1 The alarm does not sound.
Is the watch’s battery charged? Keep the watch exposed to light until it recharges sufficiently. l Solar Charging
The crown is pulled out. The alarm will not sound while the crown is pulled out. Push the crown back in to its normal position.
Is the alarm enabled? Enable the alarm. l Enabling/Disabling the Alarm
Hand Movement and Indications
Q1 I don’t know what mode the watch is in.
You can determine the current mode by checking the mode hand position. Use (C) to navigate between modes. l Navigating Between Modes
30
Q2 The second hand is jumping at twosecond intervals.
Battery power is low. Keep the watch exposed to light until it recharges sufficiently. l Solar Charging
Q3 All hands are stopped and buttons do not work.
The battery is dead. Keep the watch exposed to light until it recharges sufficiently. l Solar Charging

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Operation Guide 5544

Q4 The hands suddenly start moving at high speed.
This is due to the reason (or one of the reasons) below, and does not indicate malfunction. Simply wait until normal hand movement resumes.
The watch is recovering from a power saving state. l Power Saving
A time calibration signal is being received and the time setting is being adjusted. l Adjusting the Time Setting
Watch is connected with a phone to adjust its time setting. l Connecting with a Phone to Adjust the Watch’s Time

Crown Operations
Q1 Nothing happens when I rotate the crown.
If you do not perform any operation for about two minutes after pulling out the crown (approximately 30 minutes in the case of hand and day indicator alignment), crown operations will automatically become disabled. Push the crown back in to its normal position and then pull it out again to re-enable crown operations. l Using the Crown

Q5 Hands are stopped and buttons do not work.
The watch is in the charge recovery mode. Wait until the recovery process is complete (for about 15 minutes). The watch will recover more quickly if you place it in a brightly lit location.

Q6 Why is the current time indicated by the watch is off by a certain amount of time (nine hours, three hours and 15 minutes, etc.)?
The city setting is not correct. Select the correct setting. l Setting a Home City
Q7 The current time indicated by the watch is off by one hour or 30 minutes.
The summer time setting is not correct. Select the correct setting. l Setting a Home City
Q8 The hand and/or day indicator are not aligned correctly.
Strong magnetism or impact can cause the hands and/or the indicator to go out of alignment. Adjust hand and/or day indicator alignment. l Adjusting Hand and Day Indicator
Alignment Check the information below to find out how
to align the hands and/or day indicator manually. l Adjusting Hand and Day Indicator
Alignment

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