CASIO 3562 Adult Quartz Watch Installation Guide

: June 16, 2024
: Casio

3562 Adult Quartz Watch

Product Information

Specifications

Model: MA2307-EA
Operation Guide: 3562
Published: 7/2023
Manufacturer: CASIO COMPUTER CO., LTD.
Website: https://s.casio.jp/mw/en/3562/

Features

The watch offers the following features:

Timekeeping
Moon and Tide Data Display
Stopwatch
Timer
Illumination

Product Usage Instructions

Selecting a Mode

To change the mode on the watch, follow these steps:

Press the C button to cycle through the available modes.
In any mode (except when a setting screen is on the display),
press the B button to illuminate the watch face.

Timekeeping Mode

The Timekeeping mode allows you to set and display the current
time.

Setting the Time

In Timekeeping mode, press and hold the A button until the
seconds digits start to flash.
Press the C button to move between seconds, minutes, hours,
day, month, and year.
Use the B button to increase the selected value.
Press the A button to confirm and exit the setting mode.

Moon/Tide Data Mode

The Moon/Tide Data mode displays information about the moon
phase and tide movements.

Viewing Moon Phase and Tide Data

Enter Moon/Tide Data mode by pressing the C button until the
corresponding mode is displayed.
Use the C button to scroll through the available data, such as
moon age, moon phase, lunitidal interval, and tide graph.

Stopwatch Mode

The Stopwatch mode allows you to measure elapsed time with
precision.

Measuring Time with the Stopwatch

Enter Stopwatch mode by pressing the C button until the
corresponding mode is displayed.
Press the B button to start and stop the stopwatch.
Press the A button to reset the stopwatch to zero.

Timer Mode

The Timer mode allows you to set and countdown from a specific
time interval.

Using the Timer

Enter Timer mode by pressing the C button until the
corresponding mode is displayed.
Press and hold the A button until the time digits start to
flash.
Use the C button to move between hours, minutes, and
seconds.
Use the B button to increase the selected value.
Press the A button to start or stop the timer.

Illumination

The watch is equipped with an illumination feature to improve
visibility in low-light conditions.

To Illuminate the Display

In any mode (except when a setting screen is on the display),
press the B button to illuminate the watch face.

To Specify the Illumination Duration

In any mode, hold down the B button until the illumination
duration setting screen appears.
Use the C button to select the desired duration (1.5 seconds, 3
seconds, or Auto).
Press the A button to confirm the setting and exit the
menu.

FAQ

A: No, the longitude, lunitidal interval, Moon phase indicator,
and tide graph data on the watch are not intended for navigation
purposes. Always use proper instruments and resources for
navigation.

Q: Can the watch calculate low tide and high tide times

accurately?

A: No, the tide graph on the watch provides a reasonable
approximation of tidal movements but is not meant for precise
calculations of low and high tide times.

Q: Who is responsible for any damage or loss caused by the

watch’s malfunction?

A: CASIO COMPUTER CO., LTD. assumes no responsibility for any
damage or loss suffered by you or any third party arising from the
use of the watch or its malfunction.

MA2307-EA

Operation Guide 3562

Published: 7/2023

You can also find information about operational procedures at the CASIO website.
https://s.casio.jp/mw/en/3562/

ENGLISH

Warning!
x The longitude, lunitidal interval, Moon phase indicator and tide graph data that appear on the display of this watch are not intended for navigation purposes. Always use proper instruments and resources to obtain data for navigation purposes.
x This watch is not an instrument for calculating low tide and high tide times. The tide graph of this watch is intended to provide a reasonable approximation of tidal movements only.
x 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.

EN-1
About This Manual
x Button operations are indicated using the letters shown in the illustration.
x Note that the product illustrations in this manual are intended for reference only, and so the actual product may appear somewhat different than depicted by an illustration.
x Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the “Reference” section.

EN-2
Contents
About This Manual ……………………………………………………………………………… EN-3 Watch Features ………………………………………………………………………………….. EN-7 Selecting a Mode ……………………………………………………………………………….. EN-8 Timekeeping …………………………………………………………………………………….. EN-10
To set the time and date…………………………………………………………………..EN-11 To toggle the Timekeeping Mode time between DST and Standard Time ….EN-14 To configure Home Site data…………………………………………………………….EN-17 To toggle between 12-hour and 24-hour timekeeping…………………………..EN-19 Moon/Tide Data………………………………………………………………………………… EN-20 To view the current Moon/Tide Data Mode data ………………………………….EN-21 To specify a date …………………………………………………………………………….EN-23
EN-4
Illumination ………………………………………………………………………………………. EN-40 To illuminate the display …………………………………………………………………..EN-40 To specify the illumination duration ……………………………………………………EN-41
Reference ………………………………………………………………………………………… EN-42 To turn the button operation tone on and off……………………………………….EN-48
Specifications…………………………………………………………………………………… EN-51

EN-6

Selecting a Mode
x Press C to change from mode to mode. x In any mode (except when a setting screen is on the display), press B to illuminate
the face of the watch.

Timekeeping Mode

Moon/Tide Data Mode

Stopwatch Mode

C

EN-8

EN-3
Stopwatch………………………………………………………………………………………… EN-24 To measure times with the stopwatch ………………………………………………..EN-25
Timer ……………………………………………………………………………………………….. EN-26 To use the timer………………………………………………………………………………EN-27 To set up the timer ………………………………………………………………………….EN-28
Alarm……………………………………………………………………………………………….. EN-30 To set an alarm time ………………………………………………………………………..EN-32 To test the alarm……………………………………………………………………………..EN-34 To turn Alarms 2 and 3, and the Hourly Time Signal on and off………………EN-35 To select the operation of Alarm 1……………………………………………………..EN-36
Dual Time…………………………………………………………………………………………. EN-37 To set the Dual Time………………………………………………………………………..EN-38

EN-5

Watch Features
Moon/Tide Data
Moon/tide data lets you view the Moon age and Moon phase for a particular date, and tidal movements for a particular date and time at your Home Site.
Stopwatch
Timer
Alarm
Dual Time

You can also find information about operational procedures at the CASIO website.

https://s.casio.jp/mw/en/3562/

EN-7

Timer Mode

Alarm Mode C

You can also find information about operational procedures at the CASIO website.

C Dual Time Mode C

https://s.casio.jp/mw/ en/3562/
EN-9

Operation Guide 3562

Timekeeping

Moon phase indicator Tide graph Graphic area
Day of week

Use the Timekeeping Mode to set and view the current time and date.
x The Moon phase indicator (page EN-42) shows the current Moon phase in accordance with the current date as kept in the Timekeeping Mode.
x The tide graph (page EN-44) shows tidal movements for the current date in accordance with the current time as kept in the Timekeeping Mode.
x The graphic area indicates the current time as kept in the Timekeeping Mode. For details on reading the graphic areas, see “Graphic Area” (page EN-46).

Hour : Minutes

Month Day

Seconds

PM indicator

EN-10

3. When the setting you want to change is flashing, use B and D to change it as described below.

Screen

To do this:

Do this:

Reset the seconds to 00

Press D.

Toggle between Daylight Saving Time (On) and Standard Time (OF)

Press D.

Change the hour or minutes

Change the year

Use B () and D (+).

Change the month or day

EN-12

To toggle the Timekeeping Mode time between DST and Standard Time

DST indicator

1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting

screen.

2. Press C once to display the DST setting screen.

3. Press D to toggle between Daylight Saving Time (On displayed) and Standard Time (OF displayed).

On/Off status

4. Press A twice to exit the setting screen.
x The DST indicator appears on the Timekeeping, Moon/Tide Data, and Alarm Mode screens to indicate that Daylight Saving Time is turned on. In the case of the Moon/Tide Data Mode, the DST indicator appears on the tide data screen only.

EN-14
x The following is the initial factory default Home Site data (Tokyo, Japan) when you first purchase the watch, and whenever you have the battery replaced. Change these settings to match the area where you normally use the watch. UTC differential (+9.0); Longitude (East 140 degrees); Lunitidal interval (5 hours, 20 minutes)

EN-16

4. When the setting you want to change is flashing, use B and D to change it as described below.

Setting UTC Differential
Longitude Value East Longitude/ West Longitude

Screen

Button Operations
Use B () and D (+) to change the setting. x You can specify a value in the range of 12.0 to
+14.0, in 0.5-hour units.
Use B () and D (+) to change the setting. x You can specify a value in the range of 0° to 180°,
in 1-degree units.
Use D to switch between east longitude (E) and west longitude (W).

Lunitidal Interval Hours, Minutes

Use B () and D (+) to change the setting.

x When the DST setting is on, the UTC differential can be set in a range of 11.0 to +15.0 in 0.5-hour units.
5. Press A to exit the setting screen. EN-18

Important! x Be sure to configure the current time and date, and your Home Site data (data
for the site where you use the watch) correctly before using the functions of this watch. See “Home Site Data” (page EN-15) for more information.
To set the time and date 1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen.
2. Press C to move the flashing in the sequence shown below to select the other settings.

C Seconds
C Day

C

DST

Hour

Month

C

C Year

Minutes C
EN-11

4. Press A twice to exit the setting screen. x The first press of A displays the UTC differential setting screen. Pressing A again exits the setting screen. x See “Daylight Saving Time (DST) Setting” below for details about the DST setting. x The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.
Daylight Saving Time (DST) Setting Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

EN-13

Home Site Data Moon phase, tide graph data, and Moon/Tide Data Mode data will not be displayed properly unless Home Site data (UTC differential, longitude, and lunitidal interval) is configured correctly. x The UTC differential is a value that indicates the time difference between a
reference point in Greenwich, England and the time zone where a city is located. x The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the
world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s rotation. x The lunitidal interval is the time elapsing between the Moon’s transit over a meridian and the next high tide at that meridian. See “Lunitidal Interval” (page EN-45) for more information. x This watch displays lunitidal intervals in terms of hours and minutes. x The “Site/Lunitidal Interval Data List” at the back of this manual provides UTC differential and longitude information around the world.
EN-15

To configure Home Site data
1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen.

2. Press A again to display the UTC differential setting screen.

UTC differential

3. Press C to move the flashing in the sequence shown below to select other settings.

C

UTC Differential

Longitude Value

C

Lunitidal Interval Minutes C

C East Longitude/ West Longitude C
Lunitidal Interval Hours
EN-17

To toggle between 12-hour and 24-hour timekeeping In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and 24-hour timekeeping.
x With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for times in the range of noon to 11:59 p.m. and the A (AM) indicator appears to the left of the hour digits for times in the range of midnight to 11:59 a.m.
x With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator.
x The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.
x The A and P indicators are not displayed with the Timekeeping Mode time on the Timer Mode and Dual Time Mode screens.

EN-19

Operation Guide 3562

Moon/Tide Data

Tide Data Screen
Moon phase indicator Tide graph

Time

Year

Month Day

Moon/tide data lets you view the Moon age and Moon phase for a particular date, and tidal movements for a particular date and time at your Home Site.
x If you suspect that the current Moon/tide data is wrong for some reason, check the current Timekeeping Mode settings (time, date, and Home Site), and correct them if required.
x See “Moon Phase Indicator” (page EN-42) for information about the Moon phase indicator and “Tide Graph” (page EN-44) for information about the tide graph.
x All of the operations in this section are performed in the Moon/Tide Data Mode, which you enter by pressing C (page EN-8).
x If you do not perform any operation for about two to three minutes while in the Moon/Tide Data Mode, the watch automatically returns to the Timekeeping Mode.

EN-20

Tide Data Screen Tide graph

Moon Data Screen Moon phase indicator

Year Month Day

A
Year Month Day

Time

Moon age

x While the tide data screen is displayed, press D to advance to the next hour. x While the Moon data screen is displayed, press D to advance to the next day.
x You can also specify a particular date (year, month, day) to view its tide data and Moon data. See “To specify a date” for more information.
x When you enter the Moon/Tide Data Mode, the screen (tide data or Moon data) that was displayed the last time you exited the mode appears first.

EN-22

Stopwatch
1/100 second Hours

Minutes

Seconds

The stopwatch lets you measure elapsed time, split times, and two finishes.
x The display range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds.
x The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.
x An ongoing elapsed time measurement operation will continue internally even if you change to another mode. However, if you exit the Stopwatch Mode while a split time is displayed, the split time will not be displayed when you return to the Stopwatch Mode.
x All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C (page EN-8).

EN-24

Timer

Timekeeping Mode time Hours

You can set the countdown timer within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero.
x You can also select auto-repeat, which automatically restarts the countdown from the original value you set whenever zero is reached.
x All of the operations in this section are performed in the Timer Mode, which you can enter using C (page EN-9).

Minutes

Seconds

To view the current Moon/Tide Data Mode data In the Moon/Tide Data Mode, press A to toggle between the tide data screen and the Moon data screen.
x The tide graph shows the tide for the currently displayed time. The initial tide data screen shows the level for 6:00 a.m. The Moon data screen shows the Moon age and Moon phase for the current date.
x If you are using 12-hour timekeeping, P (p.m.) or A (a.m.) will be indicated for the times on tide data screens.

EN-21

To specify a date Month Day
Year

1. In the Moon/Tide Data Mode, hold down A until the year setting starts to flash, which indicates the setting screen.
2. Press C to move the flashing in the sequence shown below to select the other settings.

Year

C

Month

C Day

3. While a setting is flashing, use B () or D (+) to change it. x You can specify a date in the range of January 1, 2000 to December 31, 2099.
4. Press A to exit the setting screen. 5. Use A to display either the tide data screen or the Moon data screen.
EN-23

To measure times with the stopwatch

Elapsed Time

D

Start

Stop

Resume

D Stop

A Reset

Split Time D Start

A

Split

Split release

(SPL displayed)

D Stop

A Reset

Two Finishes D Start

A
Split First runner finishes. Display time of first runner.

D
Stop Second runner finishes.

A
Split release Display time of second runner.

A Reset

EN-25

To use the timer Press D while in the Timer Mode to start the countdown timer.
x When the end of the countdown is reached and auto-repeat is turned off, the alarm sounds for 10 seconds or until you stop it by pressing any button. The countdown time is automatically reset to its starting value after the alarm stops.
x When auto-repeat is turned on, the countdown will restart automatically without pausing when it reaches zero. The alarm sounds in order to signal when the countdown reaches zero.
x The countdown timer measurement operation continues even if you exit the Timer Mode.
x Press D while a countdown operation is in progress to pause it. Press D again to resume the countdown.
x To completely stop a countdown operation, first pause it (by pressing D), and then press A. This returns the countdown time to its starting value.

EN-26

To set up the timer

1. While the countdown start time is on the display in the Timer Mode, hold down A until the hour setting of the countdown start time starts to flash, which indicates the setting screen. x If the countdown start time is not displayed, use the procedure under “To use the timer” to display it.
2. Press C to move the flashing in the sequence shown below to select other settings.

Hours

C

Minutes

Auto-repeat

EN-27

3. While a setting is flashing, use B and D to change it as described below.

Screen

To do this:

Do this:

Change the hours or minutes

Use B () and D (+).

Toggle auto-repeat on (On) and off (OF)

Press D.

x To specify a countdown start time of 24 hours, set 0:00.
4. Press A to exit the setting screen. x The auto-repeat on indicator ( ) is displayed on the Timer Mode screen while this function is turned on. x Frequent use of auto-repeat and the alarm can run down battery power.

EN-28

EN-29

Operation Guide 3562

Alarm

Alarm date (Month Day)
Alarm time (Hour : Minutes)
Alarm number

You can set up to three independent multi-function alarms with hour, minutes, month, and day. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. One of the alarms has a snooze feature. You can also turn on an Hourly Time Signal that causes the watch to beep every hour on the hour.
x There are three alarms numbered 1 through 3. The Hourly Time Signal screen is indicated by :00.
x All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C (page EN-9).
x If you do not perform any operation for about two to three minutes while in the Alarm Mode, the watch automatically returns to the Timekeeping Mode.

EN-30

To set an alarm time

1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.

D

-1

-2

:00

-3

D

x Alarm 1 has a snooze feature. x The snooze alarm operation repeats every five
minutes.
2. After you select an alarm, hold down A until the hour setting of the alarm time starts to flash, which indicates the setting screen. x This operation automatically turns on the alarm.

EN-32

5. Press A to exit the setting screen.
Alarm Operation The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in. While the snooze function is turned on, the alarm operation will repeat every five minutes up to seven times, or until the alarm or snooze function is turned off. x To stop the alarm tone after it starts to sound, press any button. x Performing any one of the operations below during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation. Displaying the Timekeeping Mode setting screen (page EN-11) Displaying the alarm 1 setting screen (page EN-32)
To test the alarm In the Alarm Mode, hold down D to sound the alarm.

EN-34

To select the operation of Alarm 1 1. In the Alarm Mode, use D to select Alarm

2. Press A to cycle through the available settings in the sequence shown below.

A

ALM

SNZ ALM

Alarm on

Snooze feature on

Alarm off

x The applicable alarm on indicator (SNZ ALM) is displayed in all modes when an alarm is turned on.
x SNZ indicator flashes during the 5-minute intervals between alarms. x Displaying the Alarm 1 setting screen (page EN-32) while the snooze alarm is
turned on automatically turns off the snooze feature.

EN-36

To set the Dual Time Timekeeping Mode time
DST indicator Dual time (Hour : Minutes)

1. Press C to enter the Dual Time Mode (page EN-9).
2. In the Dual Time Mode, hold down A until the DST setting starts to flash, which indicates the setting screen.
3. Press C to move the flashing in the sequence shown below to select the other settings.

C

DST

Hour

Minutes

EN-38

Alarm Types The alarm type is determined by the settings you make, as described below.
x Daily alarm Set the hour and minutes for the alarm time. This type of setting causes the alarm to sound everyday at the time you set.
x Date alarm Set the month, day, hour and minutes for the alarm time. This type of setting causes the alarm to sound at the specific time, on the specific date you set.
x 1-Month alarm Set the month, hour and minutes for the alarm time. This type of setting causes the alarm to sound everyday at time you set, only during the month you set.
x Monthly alarm Set the day, hour and minutes for the alarm time. This type of setting causes the alarm to sound every month at the time you set, on the day you set.
EN-31

3. Press C to move the flashing in the sequence shown below to select other settings.

Hour

C

Minutes

Month

C Day

4. While a setting is flashing, use B () and D (+) to change it. x To set an alarm that does not include a month (daily alarm, monthly alarm), set for the month. Use B and D until the mark appears (between 12 and 1) while month setting is flashing. x To set an alarm that does not include a day (daily alarm, 1-month alarm), set for the day. Use B and D until the mark appears (between the end of the month and 1) while the day setting is flashing. x If you are using 12-hour timekeeping, P (p.m.) or A (a.m.) will be indicated for alarm times. x When setting an alarm time using 12-hour timekeeping, take care to set the time correctly as a.m. (A indicator) or p.m. (P indicator).
EN-33

To turn Alarms 2 and 3, and the Hourly Time Signal on and off 1. In the Alarm Mode, use D to select alarm number 2 or 3, or the Hourly Time
Signal.
2. Press A to toggle it on and off. x Turning on alarm 2 or 3 displays the alarm on indicator. x Turning on the Hourly Time Signal displays the hourly time signal on indicator. x The alarm on (ALM) indicator and hourly time signal on (SIG) indicator are displayed in all modes.

Alarm on indicator

Hourly time signal on indicator

EN-35
Dual Time
The Dual Time Mode lets you keep track of time in a different time zone. You can select Standard Time or Daylight Saving Time for the Dual Time Mode time. x In the Dual Time Mode, the seconds count is synchronized with the seconds count
of the Timekeeping Mode.

EN-37

4. When the setting you want to change is flashing, use B and D to change it as described below.

Screen

To do this:

Do this:

Toggle between Daylight Saving Time (On) and Standard Time (OF)

Press D.

Change the hour or minutes

Use B () and D (+).

x If you are using 12-hour timekeeping, P (p.m.) or A (a.m.) will be indicated for the time.
5. Press A to exit the setting screen. x The DST indicator on the Dual Time Mode screen indicates that DST is turned on for the Dual Time Mode time.

EN-39

Operation Guide 3562

Illumination
The watch has an LED light that you can turn on for reading in the dark. x See “Illumination Precautions” (page EN-50) for more important information.
To illuminate the display In any mode, press B to turn on illumination. x You can use the procedure below to select either 1.5 seconds or 3 seconds as the
illumination duration. When you press B, the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.

To specify the illumination duration 1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen.
2. While the seconds are flashing, press B to toggle the illumination duration between 1.5 seconds ( ) and 3 seconds ( ).
3. Press A twice to exit the setting screen.

EN-40

Reference
This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Moon Phase Indicator
The Moon phase indicator of this watch indicates the current phase of the Moon as shown below.

Moon Phase Indicator

(part you cannot see)

Moon phase (part you can see)

Moon Age 0.0-1.8 27.7-29.5

Moon Phase

New Moon

1.9-5.5

5.6-9.2
First Quarter (Waxing)

9.3-12.9 13.0-16.6 16.7-20.2 20.3-23.9 24.0-27.6

Full Moon

Last Quarter (Waning)

EN-42

Tide Graph
The Tide Graph has six graphic segments, each of which indicates a different tide level. The current tide level is indicated by the displayed graphic segment.

Low Tide

(Rising Tide)

High Tide

(Falling Tide)

Low Tide

Tidal Movements
Tides are the periodic rise and fall of the water of oceans, seas, bays, and other bodies of water caused mainly by the gravitational interactions between the Earth, Moon and Sun. Tides rise and fall about every six hours. The tide graph of this watch indicates tidal movement based on the Moon’s transit over a meridian and the lunitidal interval. The lunitidal interval differs according to your current location, so you must specify a lunitidal interval in order to obtain the correct tide graph readings.

EN-44

Graphic Area What the graphic display shows depends on the current watch mode.

Graphic area

Hour hand Minute hand

Second hand

EN-41
x The Moon phase indicator shows the Moon as viewed at noon from a position in the Northern Hemisphere looking south. Note that at times the image shown by the Moon phase indicator may differ from that of the actual Moon in your area.
x The left-right orientation of the Moon phase is reversed when viewing from the Southern Hemisphere or from a point near the equator.
Moon Phases and Moon Age The Moon goes through a regular 29.53-day cycle. During each cycle, the Moon appears to wax and wane as the relative positioning of the Earth, Moon, and Sun changes.
EN-43
x The tide graph displayed by this watch is based on the current Moon age. Remember that the margin for error of the Moon age displayed by this watch is ±1 day. The greater the error in a particular Moon age, the greater the error in the resulting tide graph.
Lunitidal Interval Theoretically, high tide is at the Moon’s transit over the meridian and low tide is about six hours later. Actual high tide occurs somewhat later, due to factors such as viscosity, friction, and underwater topography. Both the time differential between the Moon’s transit over the meridian until high tide and the time differential between the Moon’s transit over the meridian until low tide are known as the “lunitidal interval”. When setting the lunitidal interval for this watch, use the time differential between the Moon’s transit over the meridian until high tide.
EN-45
Timekeeping Mode, Moon/Tide Data Mode Graphic segments appear and disappear with the passage of Timekeeping Mode hours, minutes, and seconds. Stopwatch Mode, Timer Mode Graphic segments appear and disappear along with measurements. Alarm Mode Graphic segments appear and disappear in accordance with the alarm time. Dual Time Mode Graphic segments appear and disappear with the passage of the Dual Time.

EN-46
Button Operation Tone The button operation tone sounds any time you press one of the watch’s buttons. You can turn the button operation tone on or off as desired. x Even if you turn off the button operation tone, the alarm, Hourly Time Signal, and Timer Mode alarm all operate normally.
To turn the button operation tone on and off In any mode (except when a setting screen is on the display), hold down C to toggle the button operation tone on ( not displayed) and off ( displayed). x Holding down C to turn the button operation tone on or off also causes the
watch’s current mode to change. x The indicator is displayed in all modes when the button operation tone is turned
off.
EN-48

EN-47
Auto Return Features x If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch automatically exits the setting screen. x If you leave the watch in the Moon/Tide Data or Alarm Mode for two or three
minutes without performing any operation, it automatically changes to the Timekeeping Mode. Scrolling The B and D buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.
EN-49

Operation Guide 3562

Timekeeping x Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes. x The year can be set in the range of 2000 to 2099. x The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced.
Illumination Precautions x Illumination may be difficult to see when viewed under direct sunlight. x Illumination turns off automatically whenever an alarm sounds. x Frequent use of illumination runs down the battery.
EN-50
Timer: Measuring unit: 1 second Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Time up alert duration: 10 seconds Other: Auto-repeat timing
Alarm: 3 Multi-function alarms (1 with snooze feature); Hourly Time Signal Alarm type: Daily alarm, Date alarm, 1-month alarm, Monthly alarm
Alert duration: 10 seconds Dual Time: Hour, minutes, seconds, a.m. (A)/p.m. (P)
Other: Daylight Saving Time (summer time)/Standard Time Illumination: LED (light-emitting diode); selectable illumination duration
(approximately 1.5 seconds or 3 seconds) Other: Button operation tone on/off
EN-52

Specifications
Accuracy at normal temperature: ±30 seconds a month Timekeeping: Hour, minutes, seconds, a.m. (A)/p.m. (P), month, day, day of the
week Time format: 12-hour and 24-hour Calendar system: Full Auto-calendar pre- programmed from the year 2000 to
2099 Other: Daylight Saving Time (summer time)/Standard Time; Home Site data
settings (UTC differential, longitude, lunitidal interval) Moon/Tide Data: Tide level for a specified date and time; Moon phase indicator
and Moon age for a specified date Stopwatch:
Measuring unit: 1/100 second Measuring capacity: 23:59’59.99″ Measuring modes: Elapsed time, cumulative time, split time, two finishes
EN-51
Battery: One lithium battery (Type: CR2025) Approximately 10 years on type CR2025 (assuming alarm operation 10 sec./day and one illumination operation 1.5 sec./day) Frequent illumination shortens the battery life.
Specifications are subject to change without notice.
EN-53

Site/Lunitidal Interval Data List

Site
Anchorage Bahamas Baja, California Bangkok Boston Buenos Aires Casablanca Christmas Island Dakar Gold Coast Great Barrier Reef, Cairns Guam

UTC Differential Standard Time
9 5 7 +7 5 3 +0 +14 +0 +10 +10 +10

L-2

Longitude
149°W 77°W 110°W 101°E 71°W 58°W 8°W 158°W 17°W 154°E 146°E 145°E

Lunitidal Interval
5:40 7:30 8:40 4:40 11:20 6:00 1:30 4:00 7:40 8:30 9:40 7:40

Site
Mauritius Melbourne Miami Noumea Pago Pago Palau Panama City Papeete Rio De Janeiro Seattle Shanghai Singapore Sydney
L-4

UTC Differential Standard Time
+4 +10 5 +11 11 +9 5 10 3 8 +8 +8 +10

Longitude
57°E 145°E 80°W 166°E 171°W 135°E 80°W 150°W 43°W 122°W 121°E 104°E 151°E

Lunitidal Interval
0:50 2:10 7:30 8:30 6:40 7:30 3:00 0:10 3:10 4:20 1:20 10:20 8:40

L-1

Site
Hamburg Hong Kong Honolulu Jakarta Jeddah Karachi Kona, Hawaii Lima Lisbon London Los Angeles Maldives Manila

UTC Differential Standard Time
+1 +8 10 +7 +3 +5 10 5 +0 +0 8 +5 +8

Longitude
10°E 114°E 158°W 107°E 39°E 67°E 156°W 77°W 9°W
0°E 118°W 74°E 121°E

Lunitidal Interval
4:50 9:10 3:40 0:00 6:30 10:10 4:00 5:20 2:00 1:10 9:20 0:10 10:30
L-3

UTC Differential

Site

Longitude

Lunitidal Interval

Standard Time

Tokyo Vancouver Wellington

+9

140°E

5:20

8

123°W

5:10

+12

175°E

4:50

xThe contents of the above table are current as of January 2023. xThe rules governing global times (UTC offset and GMT differential) and summer
time are determined by each individual country.

L-5