Operation Guide 3525
EN-1
B
About This Manual
x Depending on the model of your watch, display text
appears either as dark figures on a light background or
light figures on a dark background. All sample displays
in this manual are shown using dark figures on a light
background.
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.
EN-9
To enable or disable Flash Alert
In the Timekeeping Mode, hold down B for about two seconds to toggle Flash
Alert between enabled and disabled. An indicator on the display shows when Flash
Alert is enabled.
Flash Alert indicator
x The Flash Alert indicator is shown in all modes until you disable Flash Alert.
EN-8
Backlight
The backlight illuminates the display. Enabling Flash Alert causes the backlight to
flash while the alarm (page EN-10), countdown timer alarm, or hourly time signal is
sounding.
x Pressing D at any time illuminates the display regardless of the Flash Alert
enabled/disabled setting.
x Frequent use of the backlight shortens battery life.
x Illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
x Display illumination will automatically turn off if an alarm starts to sound.
EN-7
3. While the seconds digits are selected (flashing), press B to reset the seconds
to “00”. If you press B 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 (besides seconds) are selected (flashing), press B to
increase the number. Holding down B changes the number at high speed.
x To switch between the 12-hour and 24-hour formats, press D
while
some digits are flashing.
5. After you set the time and date, press A to return to the Timekeeping Mode.
x The day of the week is automatically set in accordance with the date.
x The date can be set within the range of January 1, 2000 to December 31, 2099.
x If you do not operate any button for a few minutes while a selection is flashing,
the flashing stops and the watch goes back to the Timekeeping Mode
automatically.
EN-6
Timekeeping
To set the time and date
1. Press A while in the Timekeeping Mode. The
seconds digits flash on the display because they
are selected.
2. Press C to change the selection in the following
sequence.
Minute
HourSecond
Month
Day
C
C
CC
C
Year
C
Day of week
Month
Day
Minute
PM indicator
Hour
Second
EN-5
C
Stopwatch Mode Timer Mode
C
x After you perform an operation in any mode, pressing C returns to the
Timekeeping Mode.
x Press D in any mode to illuminate the display. Illumination turns off about two
seconds after you release D.
EN-4
General Guide
x Press C to change from mode to mode.
Timekeeping Mode Alarm Mode
CC
EN-3
Timer .............................................................................................................. EN-14
To set the countdown time .........................................................................EN-14
To use the countdown timer .......................................................................EN-15
To switch auto repeat timing on and off .....................................................EN-16
Stopwatch ...................................................................................................... EN-18
To measure elapsed time............................................................................EN-18
To record split times ..................................................................................EN-19
To time first and second place finishes.......................................................EN-19
Specifications ................................................................................................ EN-20
Operating Precautions .................................................................................. EN-23
User Maintenance ......................................................................................... EN-33
EN-2
Contents
About This Manual .......................................................................................... EN-1
General Guide .................................................................................................. EN-4
Timekeeping .................................................................................................... EN-6
To set the time and date ...............................................................................EN-6
To enable or disable Flash Alert....................................................................EN-9
Alarm .............................................................................................................. EN-10
To set the alarm time ..................................................................................EN-11
To stop the alarm .......................................................................................EN-13
To switch an alarm and Hourly Time Signal on and off ...............................EN-13
EN
ENGLISH
Congratulations upon your selection of this CASIO watch.
To ensure that this watch provides you with the years of service for which it is
designed, carefully read and follow the instructions in this manual, especially the
information under “Operating Precautions” and “User Maintenance”.
MA2404-EB
© 2023 CASIO COMPUTER CO., LTD.
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