Switching Between 12-Hour And 24-Hour Timekeeping - Casio G-Shock GBA-400-4B Operation Manual

Selecting a Time Zone
Use the procedure below to select the
time zone (offset from mean time) for
your Home City, where you will normally
be using the watch. If you are in an area
that uses summer time, you can also
enable or disable summer time.
Important!
The times shown in the World
●
Time Mode will not be correct if
you select the wrong time zone.
1. Hold down the (A) button for about
two seconds.
[SET Hold] will appear, and then the
time zone setting will flash.
2. Rotate the rotary switch to change
the time zone.
For information about time zones,
●
see the "City Name List".
Example:
If you plan to use the watch in Tokyo,
select [+ 09:00].
3. To change the summer time setting,
press (C).
If you don't want to change the
●
summer time setting, press (A).
4. Rotate the rotary switch to display
[ON] (summer time) or [OFF]
(standard time).
5. Press (A) to exit the setting screen.
Note
The DST indicator is on the
●
display while summer time is
enabled.
Operation Guide 5413
Setting the Time and Date
1. Hold down the (A) button for about
two seconds.
[SET Hold] will appear, and then the
time zone setting will flash.
2. Press (C) three times so the seconds
digits are flashing.
Rotary
3. Press (D) to reset the seconds count
switch
to 00.
If the seconds count is between 30
●
and 59 when you press (D), 1 will
be added to the minute count.
4. Press (C) so the hour setting is
flashing.
5. Set the date.
Rotate the rotary switch to change
●
the flashing setting.
Each press of (C) cycles the
●
flashing setting in the following
sequence: hour n minute n year
n month n day.
6. Press (A) to exit the setting screen.
Time zone
Seconds
Rotary
switch
Hours
Switching between 12-hour
and 24-hour Timekeeping
1. Hold down the (A) button for about
two seconds.
[SET Hold] will appear, and then the
time zone setting will flash.
Time zone
2. Press (C) twice and the current
setting ([12H] or [24H]) will flash on
the display.
PM indicator
3. Rotate the rotary switch to display
[12H] (12-hour timekeeping) or [24H]
(24-hour timekeeping).
4. Press (A) to exit the setting screen.
Note
While 12-hour timekeeping is
●
selected, indicators will appear
on the display to indicate a.m.
and p.m. times.
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