Casio 4388 Watch User Manual


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Operation Guide 4386/4388
MA0802-EA
About This Manual
• The operational procedures for Modules 4386 and 4388 are identical. All of the
illustrations in this manual show Module 4388.
• 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.
• Button operations are indicated using the letters shown in the illustration.
• For the sake of simplicity, the sample displays in this manual do not show the analog
hands or some design elements of the watch.
• 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.
Module 4386 Module 4388
Press .
Timekeeping Mode World Time Mode Countdown Timer Mode Stopwatch Mode Alarm Mode Hand Setting Mode
General Guide
• Press C to change from mode to mode.
• In any mode (except when a setting screen is on the display), press B to illuminate
the face.
Timekeeping
This watch features separate digital and analog timekeeping. The procedures for
setting the digital time and analog time are different.
• In the Timekeeping Mode, you can press D to change the display format as shown
below.
Day of week Seconds Month – Day Hour : Minutes
PM indicator
Press .
Day of the Week Hour : MinutesMonth – Day Seconds
Digital Time and Date
Use the Timekeeping Mode to set and view a digital display of the current time and date.
When setting the digital time, you can also configure settings for summer time
(Daylight Saving Time or DST), your Home City code (the code for the city where you
normally use the watch), the 12/24-hour format, and the illumination duration.
• This watch is preset with a number of city codes, each of which represents the time
zone where that city is located. When setting the digital time, it is important that you
select the correct city code for your Home City. If your location is not included in the
preset city codes, select the preset city code that is in the same time zone as your
location.
• Note that all of the times for the World Time Mode city codes are displayed in
accordance with the digital time and date settings you configure in the Timekeeping
Mode.
• After you correctly set your Home City time and date, you can set the watch up for
timekeeping with a different city code simply by changing the Home City code in the
Timekeeping Mode.
To set the digital 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 twice to move the flashing to the Home City
code setting (see the illustration below), and then use
B and D to select the code you want.
• Make sure you select your Home City code before
changing any other setting.
• For full information on city codes, see the “City Code
Tables”.
3. Press C to move the flashing in the sequence shown below to select the other settings.
Seconds DST Home City Code Hour Minutes
Day Month Year 12/24-Hour FormatIllumination Duration
Screen To do this:
Reset the seconds to 00
Toggle between Daylight Saving Time (ON)
and Standard Time (OFF)
Change the Home City code
Change the hour or minutes
Toggle between 12-hour (12H) and 24-hour
(24H) timekeeping
Change the year
Change the month or day
Select three seconds ( ) or one second ( ) as
the illumination duration
Do this:
Press D.
Press D.
Use D (east) and B (west).
Use D (+) and B (–).
Press D.
Use D (+) and B (–).
Press D.
4. When the setting you want to change is flashing, use B and D to change it as
described below.
DST indicator
5. Press A to exit the setting screen.
• Resetting the seconds only (without changing the DST, Home City code, hour, or
minute setting) causes the analog minute hand setting to be adjusted to match the
seconds count automatically. If you change any of the other settings, you will have
to adjust the hand setting manually.
• See “Digital Time Daylight Saving Time (DST) Setting” below for details about the
DST setting.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all modes.
• For details about illumination duration, see “Illumination”.
Digital Time Daylight Saving Time (DST) Setting
Daylight Saving Time (summer time) advances the digital time setting by one hour
from Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
To toggle the Timekeeping Mode digital time between DST and Standard Time
1. In the Timekeeping Mode, hold down A until the seconds
start to flash, which indicates the setting screen.
2.Press C once to display the DST setting screen.
3.Press D to toggle between Daylight Saving Time (
ON
displayed) and Standard Time (OFF displayed).
4.Press A to exit the setting screen.
• The DST indicator appears on the Timekeeping, Alarm,
and Hand Setting Mode to indicate that Daylight Saving
Time is turned on.
• If you need to advance the analog time setting a long way, hold down D until the
time starts advancing at high speed, and then press B. This locks the high-
speed hand movement, so you can release the two buttons. High-speed hand
movement continues until you press any button. It will also stop automatically
after the time advances 12 hours or if an alarm (daily alarm, Hourly Time Signal,
or countdown beeper) starts to sound.
Setting the Analog Time
Perform the procedure below when the time indicated by the analog hands does not
match the time of the digital display.
To adjust the analog time
1.In the Timekeeping Mode, press C five times to enter
the Hand Setting Mode.
2.Hold down A until the current digital time starts to
flash, which indicates the analog setting screen.
3.Press D to advance the analog time setting by
20 seconds.
• Holding down D advances the analog time setting at
high speed.
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