MO1803-EA © 2018 CASIO COMPUTER CO., LTD.
Operation Guide 3463
About This Manual
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 All explanations in this manual use expressions such as “sounds the alarm” for
alarm operations. When the Vibration Alarm is turned on, these expressions should
be understood to mean “causes the watch to vibrate” (page E-10).
E-1
Contents
General Guide ………………………………………………………………………… E-4
Timekeeping Mode …………………………………………………………………… E-6
To set the time and date ……………………………………………………… E-6
Illumination …………………………………………………………………………… E-9
Vibration Alarm …………………………………………………………………………E-10
To turn the vibration alarm on and off…………………………………………E-11
Countdown Alarm Mode………………………………………………………………E-12
To set the countdown start time ………………………………………………E-12
To use the countdown alarm …………………………………………………E-13
Stopwatch Mode ………………………………………………………………………E-14
To turn the Auto-Start function on and off ……………………………………E-16
E-2
General Guide
x Press C to change from mode to mode.
x After you perform an operation in any mode, pressing C returns to the Timekeeping
Mode.
x If you do not press any button for a few minutes while making settings in any mode
(indicated when settings are fl ashing), the watch automatically clears the setting screen
(settings stop fl ashing) and returns to the normal display for the mode you are in.
Timekeeping Mode Countdown Alarm Mode
C
E-4
C
Timekeeping Mode
Vibration alarm on indicator
(page E-10)
Day of week
Month – Day
Hour
PM indicator
E-6
Minutes
To set the time and date
1. Hold down A while in the Timekeeping Mode until
the seconds digits fl ash on the display because they
are selected.
2. Press C to change the selection in the following
sequence.
Seconds Hour Minutes
C
Seconds
C
Day Month Year
CC
C
12/24-Hour Format
Alarm Mode ……………………………………………………………………………E-17
To set the alarm time ……………………………………………………………E-17
To turn the daily alarm and hourly time signal on and off …………………E-19
To test the alarm sound ………………………………………………………E-20
Dual Time Mode ………………………………………………………………………E-21
To set the Dual Time …………………………………………………………… E-21
Specifications …………………………………………………………………………E-23
E-3
x This watch returns to the Timekeeping Mode whenever you hold down the C button
for one or two seconds. If you ever lose track of what mode you are in or what you
should do next, hold down C to return to regular timekeeping.
x In any mode press L to illuminate the display.
Stopwatch Mode Alarm Mode Dual Time Mode
CC
C
3. While the seconds digits are selected (fl ashing), press D to reset the seconds to
00. If you press D while the seconds count is in the range of 30 to 59, the seconds
are reset to 00 and 1 is added to the minutes. If the seconds count is in the range of
00 to 29, the minutes count is unchanged.
4. While any other digits (beside seconds) are selected (fl ashing), press D to
increase the number or B to decrease it. While the 12/24-hour format setting is
selected, press D or B to toggle it between 12 and 24.
x Except for when adjusting the seconds or setting the 12/24-hour format, holding
down a button changes the current selection at high speed.
x When the 12-hour format is selected, the indicator P appears on the display to
indicate “P.M.” times. There is no indicator for “A.M.” times.
C
C
x When the 24-hour format is selected, the indicator 24 appears on the display.
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.
x The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
E-5
E-7
5. After you set the time and date, press A to return to the Timekeeping Mode.
E-8
Illumination
In any mode, press L to illuminate the display for about two seconds.
x Illumination may be hard 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.
E-9
Operation Guide 3463
Vibration Alarm
When the Vibration Alarm is turned on, the watch vibrates instead of sounding an
alarm. This lets you use the watch without disturbing others by beeping sounds.
x The Vibration Alarm can be used to replace alarm sounds in the Countdown Alarm,
Stopwatch, and Alarm Modes.
x All explanations in this manual use expressions such as “sounds the alarm” for
alarm operations. When the Vibration Alarm is turned on, these expressions should
be understood to mean “causes the watch to vibrate”.
x Watches with a metal band may produce a noise when a vibration operation
is performed. This is due to vibration of the metal band, and does not indicate
malfunction of the watch.
E-10
Countdown Alarm Mode
Current time
Mode indicator
Minutes
E-12
1/10 Seconds
The countdown alarm can be set within a range of
1 second to 24 hours. When the countdown reaches
zero, an alarm sounds for 10 seconds or until you press
any button.
To set the countdown start time
1. Hold down A while in the Countdown Alarm Mode.
The hours digits fl ash on the display because they
are selected.
2. Press C to change the selection in the following
Seconds
sequence.
CC
Hour Minutes Seconds
C
Stopwatch Mode
Current time
Mode indicator
Minutes
Seconds
1/100 Seconds
The Stopwatch Mode lets you measure elapsed time,
split times, and two fi nishes. The range of the stopwatch
is 23 hour, 59 minutes, 59.99 seconds. The Stopwatch
Mode also features an Auto-Start function.
To turn the vibration alarm on and off
Vibration alarm on indicator
3. Press D to increase the selected number or B to decrease it. Holding down either
button changes the selection at high speed.
x Press D and B at the same time to clear the starting time to 0:00' 00".
x To set the starting value of the countdown time to 24 hours, set 0:00' 00".
4. After you set the countdown start time, press A to return to the Countdown Alarm
Mode.
To use the countdown alarm
1. Press D while in the Countdown Alarm Mode to start the countdown alarm.
2. Press D again to stop the countdown alarm.
x You can resume countdown alarm operation by pressing D.
3. Stop the countdown alarm and then press B to reset the countdown time to its
starting value.
x When the end of the countdown is reached, the alarm sounds for 10 seconds or
until you stop the alarm by pressing any button. Countdown timing stops and the
countdown time is automatically reset to its starting value after the alarm stops.
(a) Elapsed time measurement
D D D D B
Start Stop Re-start Stop Reset
(b) Split time measurement
D B B D B
Start Split Split release Stop Reset
(c) Split time and two fi nishes
D B D B B
Start Split
In the Timekeeping Mode, hold down D for about
two seconds to toggle the Vibration Alarm between on
(Vibration Alarm on indicator displayed) and off (indicator
not displayed).
x The watch will vibrate when you toggle to on, and beep
when you toggle to off.
x Turning on the Vibration Alarm also disables the button
operation tone.
First runner
fi nishes.
Stop
Second runner
fi nishes.
Record time of
fi rst runner.
Split release
Record time of
second runner.
E-11
E-13
Reset
E-14
About the Auto-Start function
With the Auto-Start function, pressing D causes the watch to perform a fi vesecond countdown. When the countdown reaches zero, stopwatch operation starts
automatically. During the fi nal three seconds of the countdown, a beeper sounds with
each second.
To turn the Auto-Start function on and off
While the display is showing all zeros in the Stopwatch Mode, press B to toggle it
on and off.
x The indicator AUTO-ST appears and 05 is shown in the upper display while Auto-
Start is turned on. The AUTO-ST indicator is not shown and the upper part of the
display shows the current time when Auto-Start is turned off.
E-16
3. Press D to increase the selected digits and B to decrease them. Holding down
either button changes the selection at high speed.
x The format (12-hour and 24-hour) of the alarm time matches the format you select
for regular timekeeping.
x When setting the alarm time using the 12-hour format, take care to set the time
correctly as morning (no indicator) or afternoon (P).
4. After you set the alarm time, press A to return to the Alarm Mode.
E-18
Alarm Mode
Alarm on indicator
Hourly time signal
on indicator
Current time
Mode indicator
Hour
To turn the daily alarm and hourly time signal on and off
Press B while in the Alarm Mode to change the status of the daily alarm and hourly
time signal in the following sequence.
Both OFF Daily Alarm
x The alarm on indicator ( ) and the Hourly Time Signal on indicator ( ) are shown
on the display in all modes while these functions are turned on.
When the Daily Alarm is turned on, an alarm operation
(20-second tone or 10-second vibration) is performed
at the preset time each day. Press any button to stop
the alarm after it starts to sound. When the Hourly Time
Signal is on, the watch beeps every hour on the hour.
To set the alarm time
1. Hold down A until the hour digits start to fl ash on
the display. The hour digits fl ash because they are
selected.
xThis operation will switch the Daily Alarm on
automatically.
2. Press C to change the selection in the following
sequence.
Minutes
Hour
B B B
Only
B
Hourly Time
Signal Only
C
Minutes
Both ON
E-15
E-17
E-19