Casio MA0304-A User Manual
MA0304-A
USER’S GUIDE 2810
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright
light.
• Be sure to read “Battery” of this manual for important information you
need to know when exposing the watch to bright light.
If the display of the watch is blank...
If the Power Saving on (P.S A VE ) indicator flashes on
the display, it means that the display is blank because
the watch’s Power Saving function has turned off
the display to conserve power. Power Saving
automatically turns off the display and puts the watch
into a sleep state whenever your watch is left for a
certain period where it is dark.
• The initial factory default setting is Power Saving on.
• The watch recovers from the sleep state if you move it
to a well-lit area, if you press any button, or if you
angle the watch towards your face for reading.
• See “Power Saving Function” for more
information.
General Guide
• Press C to change from mode to mode.
• In any mode, press B to illuminate the display.
Timekeeping Mode Alarm Mode Stopwatch ModeCountdown Timer Mode Dual Time Mode
About This Manual
• Button operations are indicated using the letters shown
in the illustration.
• 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.
• In any mode, hold down C for about two seconds to return to the Timekeeping Mode.
Press C.
Timekeeping
Month – Day
Day of week
PM indicator
Seconds
Hour : Minutes
3. When the setting you want to change is flashing, press D to change it as
described below.
To change this setting
Seconds
Hour, Minutes, Year, Month, Day
• Pressing D while the seconds are in the range of 30 to 59 resets them to 00 and
adds 1 to the minutes. In the range of 00 to 29, the minutes are unchanged.
4. Press A to exit the setting screen.
• The day of the week is automatically displayed in accordance with the date (year,
month, and day) settings.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar automatically 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 or when
battery power drops to Level 4.
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.
• 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 no indicator appears to the left of
the hour digits for times in the range of midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
Use the Timekeeping Mode to set and view the current
time and date.
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 other settings.
Seconds Hour
Day Month
Perform this button operation
Press D to reset to 00.
Press D to increase the setting.
Minutes
Year
Alarms
Alarm date
(Month – Day)
Alarm number
Alarm time
(Hour : Minutes)
Alarm Types
The alarm type is determined by the settings you make, as described below.
• 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.
• 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.
• 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.
• Monthly alarm
Set the day, hour and minutes for the alarm time. This type of setting causes the alarm
to sound every month at time you set, on the day you set.
To set an alarm time
• To set a one-time alarm, display one of the screens indicated by an alarm number
2
from
through 5. To set the snooze alarm, display the screen indicated by1.
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.
• This operation automatically turns on the alarm.
3. Press C to move the flashing in the sequence shown below to select other
settings.
You can set up to five 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 can be configured as a
snooze alarm or a one-time alarm, while the other four are
one-time alarms.
You can also turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
• There are five alarms numbered
configure Alarm
alarm. Alarms
alarms only.
• You can configure alarm settings and Hourly Time
Signal settings in the Alarm Mode, which you enter by
pressing C.
1. In the Alarm Mode, use D to scroll through the alarm
screens until the one whose time you want to set is
displayed.
Hour Minutes
1
as a snooze alarm or a one-time
2
through 5 can be used as one-time
Press .
Month Day
1
through 5. You can
1
USER’S GUIDE 2810
4. While a setting is flashing, press D to increase it.
• To set an alarm that does not include a month (Daily alarm, Monthly alarm),
x
set
for the month. Press D until the x mark appears (between 12 and 1) while
month setting is flashing.
• To set an alarm that does not include a day (Daily alarm, 1-Month alarm),
xx
set
for the day. Press D until the xx mark appears (between the end of the
month and 1) while the day setting is flashing.
• When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m. or p.m. (P indicator).
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. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, until you turn the alarm off or change it to a onetime alarm.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen
Displaying the alarm
To test the alarm
• In the Alarm Mode, hold down D to sound the alarm.
To turn Alarms 2 through 5 and the Hourly Time Signal on and off
Alarm on indicator
Hourly time signal
on indicator
To select the operation of Alarm
1. In the Alarm Mode, use D to select Alarm1.
2. Press A to cycle through the available settings in the sequence shown below.
Press A.
• The snooze on indicator (SNZ) and Alarm1 on indicator (AL1) are displayed in all
modes.
• The snooze on indicator (SNZ) flashes during the 5-minute intervals between
alarms.
• The alarm indicator (AL1 and/or SNZ) flashes while the alarm is sounding.
1
setting screen
1. In the Alarm Mode, use D to select a one-time alarm
(alarm number
:00
(
2. Press A to toggle it on and off.
• The on/off status of Alarms
Time Signal is shown by indicators along the bottom of
the displays.
• The alarm on indicators and Hourly time Signal on
indicator (SIG) are displayed in all modes.
• While an alarm is sounding, the applicable alarm on
indicator flashes on the display.
Snooze on indicator (SNZ) and Alarm
One-time alarm on
).
1
Snooze alarm on
2
through 5) or the Hourly Time Signal
2
through 5 and the Hourly
1
on indicator (AL1)
Alarm off
Countdown Timer
Hours
Seconds
• 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.
• The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
• Press D while a countdown operation is in progress to pause it. Press D again to
resume the countdown.
• 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.
To set the countdown start time
To turn auto-repeat on and off
Auto-repeat indicator
The countdown timer can be set within a range of
Minutes
one minute to 24 hours. An alarm sounds when the
countdown reaches zero.
• You can also select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the
countdown timer.
1. In the Countdown Timer Mode, hold down A until the
hours setting of the countdown start time starts to flash,
which indicates the setting screen.
2. Press C to move the flashing between the hours and
minutes settings.
3. While a setting is flashing, use D to change it.
• To set the starting value of the countdown time to
24 hours, set
4. Press A to exit the setting screen.
1. In the Countdown Timer Mode, hold down A until the
hours setting of the countdown start time starts to flash,
which indicates the setting screen.
2. Press B to toggle auto-repeat on (
off (
• Note that pressing B in the above operation also turns
on the backlight.
• When the end of the countdown is reached while
auto-repeat is on, the alarm sounds, but the countdown
restarts from the beginning without stopping. You can
stop the countdown by pressing D and manually reset
to the start time by pressing A.
• The auto-repeat indicator appears in the Countdown
Timer Mode only.
0:00
not displayed).
.
displayed) and
Stopwatch
1/100 second
Hours
Seconds
To measure times with the stopwatch
Elapsed time
Start Stop Re-start Stop Clear
Split time
Start
Two Finishes
Start
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 23 hours,
59 minutes, 59.99 seconds.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
• Exiting the Stopwatch Mode while a split time is frozen
Minutes
on the display clears the split time and returns to
elapsed time measurement.
• All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C.
Split
(SPL displayed)
Split Stop Split release Clear
First runner
finishes.
Display time of
first runner.
Split release Stop Clear
Second runner
finishes.
Display time of
second runner.
Dual Time
The Dual Time Mode lets you keep track of time in a different time zone.
• In the Dual Time Mode, the seconds count is synchronized with the seconds count
of the Timekeeping Mode.
To set the Dual Time
Hour : Minutes
1. Press C to enter the Dual Time Mode.
2. In the Dual Time Mode, hold down A until the hour
setting starts to flash, which indicates the setting
screen.
3. Press C to change the selection in the following
sequence.
Hour Minutes
4. Press D to increase the setting.
Seconds
5. Press A to exit the setting screen.
Backlight
The backlight uses an LED (light-emitting diode) and a
light guide panel that cause the entire display to glow for
easy reading in the dark. The watch’s auto light switch
automatically turns on the backlight when you angle the
watch towards your face in the dark.
• The auto light switch must be turned on (indicated by
the auto light switch indicator) for it to operate.
Auto light switch indicator
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on for about one second,
whenever you position your wrist as described below in any mode. Note that this
watch features a “Full Auto LED Light,” so the auto light switch operates only when
available light is below a certain level. It does not turn on the backlight under bright
light.
• Be sure to wear the watch on the outside of your left wrist while using the auto light
switch.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes the backlight to turn on.
Warning!
• Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
surprise or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding on a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create
a distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In any mode, hold down B for about two seconds to toggle the auto light switch on
(Auto light switch indicator displayed) or off (Auto light switch indicator not displayed).
• The auto light switch indicator is on the display in all modes while the auto light
switch is turned on.
• See “Backlight Precautions” for other important
information about using the backlight.
To turn on the backlight manually
In any mode, press B to illuminate the display for about
one second.
• The above operation turns on the backlight regardless
of the current auto light switch setting.
Parallel to ground More than 40
°
2
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