MA1610-EA © 2016 CASIO COMPUTER CO., LTD.

Operation Guide 3447

About This Manual Contents
x Button operations are indicated using the letters shown in General Guide .......................................................................................................... E-4
the illustration.
x Each section of this manual provides you with the Timekeeping............................................................................................................. E-8
information you need to perform operations in each mode. Alarms .................................................................................................................... E-21
Further details and technical information can be found in
the “Reference” section. Stopwatch .............................................................................................................. E-26
x To ensure that this watch provides you with the years of Countdown Timer .................................................................................................. E-28
service for which it is designed, be sure to read and follow
the instructions under “Operating Precautions” and “User Reference ............................................................................................................... E-31
Maintenance”. Specifications ........................................................................................................ E-35
x Be sure to keep all user documentation handy for future
reference. Operating Precautions .......................................................................................... E-37
User Maintenance .................................................................................................. E-47

E E-1

Procedure Lookup To disable Auto Display ........................................................................................ E-34

The following is a handy reference list of all the operational procedures contained in To enable Auto Display ......................................................................................... E-34
this manual.

To toggle the Timekeeping Mode time between DST and Standard Time ....... E-16
To illuminate the display....................................................................................... E-20
To set an alarm time .............................................................................................. E-22
To test the alarm .................................................................................................... E-23
To enable or disable an alarm .............................................................................. E-24
To enable or disable the Hourly Time Signal ...................................................... E-25
To measure times with the stopwatch................................................................. E-27
To configure the countdown timer ...................................................................... E-29
To use the countdown timer................................................................................. E-30
To enable or disable the button operation tone ................................................. E-32

E-2 E-3

General Guide x In any mode (except when a setting screen is on the display), press B to illuminate
the display.
x Press C to change from mode to mode.
x To return to the Timekeeping Mode from any other mode, hold down C for about
two seconds.

Timekeeping Mode Alarm Mode Stopwatch Mode Countdown Timer Mode

C C C

E-4 E-5

General Functions Scrolling

This section explains general functions and operations. 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
Auto Return Features operation scrolls at high speed.
x If you leave the watch in the mode below for two or three minutes without performing
any operation, it automatically changes to the Timekeeping Mode.
- Alarm Mode
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.

Initial Screens
When you enter the mode below, the data you were viewing when you last exited the
mode appears first.
- Alarm Mode

E-6 E-7

Timekeeping x Pressing D once will display the city code of your currently selected Home City for
about three or four seconds in place of the day of the week. After that, the day of the
The Timekeeping Mode’s Multi Time feature gives you quick and easy access to the week will re-appear.
current time and date in three different cities, numbered from TM-1 (Time 1) through x For details on reading the map, see “Map” (page E-31).
TM-3 (Time 3). TM-1 is your Home City Time, TM-2 and TM-3 are Local Times. Local
Times are kept in synchronization with your Home City Time (TM-1).
Local Time (TM-3)

Local Time (TM-2) Map

Month – Day
Day of week

P (p.m.) indicator Home City Time (TM-1)

Hour : Minutes, Seconds

E-8 E-9
 Operation Guide 3447
Shifting Times on the Display x Each time you perform the above operation, the displayed city codes and times are
You can use the operation below to shift the positions of the three times on the display shifted downwards, with the bottom city code and time going up to the top position,
downwards. as shown in the example below.
New TM-2 TM-3 LON TYO NYC
New TM-3 TM-2 NYC LON TYO
(about TM-1 TYO NYC LON
1 second)
D D x You can change the current time setting for your Home City Time (TM-1) only.
x For Local Times (TM-2, TM-3), you can change the city code and DST settings only.

Current Home City code New Home City (TM-1) code

E-10 E-11

Changing the Current Home City Time and Date Settings 2. Press C to move the flashing in the sequence shown below to select other
1. In the Timekeeping Mode, hold down A for about two settings.
seconds until –1– SET Hold flashes on the display and
C C C
then disappears.
City Code* DST 12/24-Hour Format Seconds
x Release the button as soon as the flashing –1–
SET Hold indicator disappears and the currently C C
selected city code flashes on the display. This Illumination Duration Setting Hour
indicates the Home City setting screen.
x Keeping A held down too long will change to the C C
Local Time 2 (TM-2) setting screen (page E-18). Button Operation Tone Minute
C C
Date Format Day Month Year
C C C

E-12 E-13

3. When the setting you want to change is flashing, use D and B to change it as Screen To do this: Do this:
described below. Toggle the setting between ON (BEEP) and
OFF (MUTE) Press D.
Screen To do this: Do this:
Use D (east) and B (west). Toggle the setting between 1.5 seconds ( )
Change the city code* Press D.
and 3 seconds ( )
Toggle between Daylight Saving Time ( )
Press D. * When setting a location that does not have a city code assigned, you can select a
and Standard Time ( )
city code from T-1 to T-3 (page L-3). When T-1 through T-3 is selected, press C
Toggle between 12-hour ( ) and 24-hour
( ) timekeeping
Press D. and then select the time offset with D and B.
x See “Daylight Saving Time (DST)” on page E-15 for details about DST setting.
Reset the seconds to Press D. 4. Press A to exit the setting screen.
x The day of the week is displayed automatically in accordance with the date (year,
Change the hour or minute Use D (+) and B (–). month, and day) settings.
Change the year Use D (+) and B (–).
Daylight Saving Time (DST)
Change the month or day Use D (+) and B (–). Daylight Saving Time (summer time) advances the time setting by one hour from
Toggle the setting between Month/Day
Press D.
Standard Time. Remember that not all countries or even local areas use Daylight
(M-DD) and Day/Month (DD-M) Saving Time.
E-14 E-15

To toggle the Timekeeping Mode time between DST and Standard Time 12/24-Hour Format
1. In the Timekeeping Mode, hold down A for about two x With the 12-hour format, the P indicator appears to the left of the hour digits for
seconds until –1– SET Hold flashes on the display and times in the range of noon to 11:59 p.m. and no indicator appears to the left of the
then disappears. hour digits for times in the range of midnight to 11:59 a.m.
x Release the button as soon as the flashing –1– x With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
SET Hold indicator disappears and the currently any indicator.
selected city code flashes on the display. This x The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
indicates the Home City setting screen. applied in all other modes.
x Keeping A held down too long will change to the
Local Time 2 (TM-2) setting screen (page E-18).
2. Press C to display the DST setting screen.
DST indicator 3. Press D to toggle between Daylight Saving Time (
displayed) and Standard Time ( displayed).
4. Press A to exit the setting screen.
x The DST indicator appears on the Timekeeping screen
to indicate that Daylight Saving Time is enabled.

E-16 E-17

Changing the City Code Setting of a Local Time 4. Press D to toggle between Daylight Saving Time ( displayed) and Standard Time
You can select any one of the city codes in the table at the back of this manual for the ( displayed).
Local Times. 5. Press A.
1. In the Timekeeping Mode, hold down A for about five x This enables Local Time (TM-3) setting.
TM-2 city code
seconds until the currently selected city code of Local x If you do not want to change Local Time 3 (TM-3) settings, go directly to step 7
Time 2 (TM-2) flashes on the display as shown in the without doing anything here.
illustration. 6. Perform steps 2 through 4 to configure Local Time 3 (TM-3) settings.
x This indicates the Local Time City setting mode. 7. Press A to return to the normal Timekeeping Mode.
2. Use D (east) and B (west) to select the city code you
want to assign to Local Time 2 (TM-2). Illumination
x The DST setting cannot be changed while UTC is LEDs (light-emitting diodes) illuminate the display for easy reading in the dark.
selected as the time zone.
Illumination Precautions
x When setting a location that does not have a city code
assigned, you can select a city code from T-1 to T-3. x Illumination may be hard to see when viewed under direct sunlight.
x When T-1 through T-3 is selected, press C and then x Illumination automatically turns off whenever an alarm sounds.
select the time offset with D and B. x Frequent use of illumination runs down the battery.
3. Press C to display the DST setting screen.

E-18 E-19
 Operation Guide 3447
To illuminate the display Alarms
In any mode (except when a setting screen is on the display), press B to illuminate
the display. Alarm on indicator Your watch has a total of five alarms, each of which you
x Pressing B illuminates the display for 1.5 or 3 seconds, depending on the current can configure as a daily alarm or one-time alarm.
illumination duration setting (page E-13). Current time x Daily Alarm: Sounds at the preset time each day.
x One-time Alarm: Sounds once at the preset time and
then is disabled automatically.
You can also enable an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
x All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C (page E-4).
x Alarms operate in coordination with the current Home
City Time.

Alarm number
Alarm time
(Hour : Minutes)

E-20 E-21

To set an alarm time 3. Press C to move the flashing between the hour and the minute digits.
1. In the Alarm Mode, use D to scroll through the alarm x The selected digits are those that are flashing.
screens until the alarm number you want to set is 4. Use D (+) and B (–) to change the hour and minute settings.
displayed. x When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m. (no indicator) or p.m. (P indicator).
D D 5. Press A to exit the setting screen.

D D
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in.
D D x Alarm and Hourly Time Signal operations are performed in accordance with the
Timekeeping Mode time.
2. Hold down A for about two seconds until SET Hold flashes on the display and x To stop the alarm tone after it starts to sound, press any button.
then disappears, and hour digits start to flash.
x This indicates the setting screen. To test the alarm
x This operation enables the One-time Alarm automatically. In the Alarm Mode, hold down D to sound the alarm.
x If you want to use the Daily Alarm, refer to “To enable or disable an alarm” (page
E-24) after performing step 5.
E-22 E-23

To enable or disable an alarm To enable or disable the Hourly Time Signal

1. In the Alarm Mode, use D to select an alarm. 1. In the Alarm Mode, use D to select the Hourly Time
Hourly time signal indicator
2. Press A to cycle through the alarm settings as shown below. Signal.
2. Press A to toggle it between enabled and disabled.
A A A x The Hourly Time Signal indicator is shown on the
display in all modes while this function is enabled.

Alarm disabled Daily Alarm enabled One-Time Alarm

enabled

x In all modes, the alarm on indicator is shown for the alarm that is currently enabled.
x The alarm indicator flashes while the alarm is sounding.

E-24 E-25

Stopwatch To measure times with the stopwatch

Elapsed Time
Hours The stopwatch lets you measure elapsed time, split times,
and two finishes. D D D D A
Current time
x The display range of the stopwatch is 23 hours, Start Stop Resume Stop Clear
59 minutes, 59.99 seconds.
x The stopwatch continues to run, restarting from zero after Split Time
it reaches its limit, until you stop it. D A A D A
x The stopwatch measurement operation continues even if
Start Split Split release Stop Clear
you exit the Stopwatch Mode. (SPL displayed)
x Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to elapsed Two Finishes
time measurement.
x All of the operations in this section are performed in D A D A A
the Stopwatch Mode, which you enter by pressing C Start Split Stop Split release Clear
Minutes (page E-5). First runner Second runner Display time of
Seconds finishes. finishes. second runner.
Display time of first
1/100 second runner.
E-26 E-27

Countdown Timer To configure the countdown timer

1. While the countdown start time is displayed in the
Hours The countdown timer start time can be set within a range Countdown Timer Mode, hold down A until the
of one second to 24 hours. An alarm sounds when the flashing SET Hold indicator disappears, and the current
Current time
countdown reaches zero. countdown start time starts to flash. This indicates the
x All of the operations in this section are performed in the setting screen.
Countdown Timer Mode, which you enter by pressing 2. Press C to move the flashing in the sequence shown
C (page E-5). below to select other settings.
C C
Hours Minutes

Seconds
C
Minutes 3. When the setting you want to change is flashing, use D (+) and B (–) to change
Seconds the flashing item.
x To specify a countdown start time of 24 hours, set 0H00'00".
1/10 second 4. Press A to exit the setting screen.
E-28 E-29
 Operation Guide 3447
To use the countdown timer Reference
In the Countdown Timer Mode, press D to start the
countdown timer. This section contains more detailed and technical information about watch operation.
x When the end of the countdown is reached, the alarm It also contains important precautions and notes about the various features and
sounds for 10 seconds or until you stop it by pressing any functions of this watch.
button. The countdown time is reset to its starting value
automatically when the alarm sounds. Map
x Press D while a countdown operation is in progress to Map x Map: Shows the zone of the currently selected Home City
pause it. Press D again to resume the countdown. Time (TM-1).
x To stop a countdown operation completely, first pause
it (by pressing D), and then press A. This returns the
countdown time to its starting value.

E-30 E-31

Button Operation Tone Timekeeping

The button operation tone sounds any time you press x Resetting the seconds to while the current count is in the range of 30 to 59
MUTE indicator
one of the watch’s buttons. You can enable or disable the causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
button operation tone as desired. reset to without changing the minutes.
x Even if you disable the button operation tone, the alarms, x The year can be set in the range of 2000 to 2099.
the Hourly Time Signal, and the countdown alarm all x The watch’s built-in full automatic calendar makes allowances for different month
operate normally. 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.
To enable or disable the button operation tone
Perform the procedure under “Changing the Current Home World Time (Local Times TM-2, TM-3)
City Time and Date Settings” (page E-12) to toggle the button x The seconds counts of the local times are synchronized with the seconds count of
operation tone between enabled (the MUTE indicator not the Home city (TM-1).
displayed) and disabled (the MUTE indicator displayed). x All local times are calculated from the current Home City Time in the Timekeeping
x The MUTE indicator is displayed in all modes when the Mode using UTC* time offset values.
button operation tone is disabled. * Coordinated Universal Time (UTC) is the global time standard used to regulate time.

E-32 E-33

Auto Display Specifications

Auto Display continually changes the contents of the digital display.
Accuracy at normal temperature: ±30 seconds a month
To disable Auto Display Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Press any button to disable Auto Display. This returns to the Timekeeping Mode. Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
To enable Auto Display Other: Multi Time (one Home City Time and two Local Times); Daylight Saving
In the Timekeeping Mode (page E-4), press B and D at the same time, and the watch Time (summer time)/Standard Time
beeps. World Time: 48 cities (31 time zones) and Coordinated Universal Time; addition of
Note desired 3 time zones
x Auto Display cannot be performed while a setting screen is on the display. Other: Standard Time/Daylight Saving Time (summer time)
Alarms: 5 alarms (daily or one-time), Hourly Time Signal
Stopwatch
Measuring unit: 1/100 second
Measuring capacity: 23:59' 59.99"
Measuring modes: Elapsed time, split time, two finishes

E-34 E-35

Countdown Timer
Measuring unit: 1/10 second
Input range: 1 second to 24 hours (1-second, 1-minute and 1-hour increments)
Illumination: LED (light-emitting diode); Selectable illumination duration
Other: Button operation tone on/off
Battery: One lithium battery (Type: CR2032)
Approximately 10 years on type CR2032; 10 seconds of alarm operation,
1.5 seconds of illumination per day
City Code Table
Specifications are subject to change without notice.

E-36 L-1

City Code Table City City UTC Offset/ City City UTC Offset/
Code GMT Differential Code GMT Differential
City UTC Offset/ City UTC Offset/ MOW Moscow SEL Seoul
City City +3 +9
Code GMT Differential Code GMT Differential JED Jeddah TYO Tokyo
PPG Pago Pago –11 Fernando de THR Tehran +3.5 ADL Adelaide +9.5
FEN –2
HNL Honolulu –10 Noronha DXB Dubai +4 GUM Guam
ANC Anchorage –9 RAI Praia –1 +10
KBL Kabul +4.5 SYD Sydney
YVR Vancouver UTC KHI Karachi +5 NOU Noumea +11
–8
LAX Los Angeles LIS Lisbon 0 DEL Delhi +5.5 WLG Wellington +12
YEA Edmonton LON London KTM Kathmandu +5.75 T-1 CUSTOM1
–7 *
DEN Denver MAD Madrid DAC Dhaka +6 T-2 CUSTOM2 *
MEX Mexico City PAR Paris RGN Yangon +6.5 T-3 CUSTOM3
–6 *
CHI Chicago ROM Rome +1 BKK Bangkok +7 * Settings from –12 to +14 (–11 to +15
NYC New York –5 BER Berlin SIN Singapore when DST ON) are supported.
YHZ Halifax –4 STO Stockholm HKG Hong Kong • Based on data as of July 2016.
+8
YYT St. John’s –3.5 ATH Athens BJS Beijing • The rules governing global times
BUE Buenos Aires CAI Cairo +2 TPE Taipei (UTC offset and GMT differential) and
–3 summer time are determined by each
RIO Rio De Janeiro JRS Jerusalem
L-2 individual country. L-3