Switching Between 12-Hour And 24-Hour Timekeeping; Illumination Light; Illuminating The Face Manually; Auto Light - Casio 5554 Operation Manual

3.
Configure the date and time settings.
To reset the seconds to 00: Press (D).
●
1 is added to the minutes when the
current count is between 30 and 59
seconds.
To change other settings: Use the (D)
●
and (B) buttons.
4.
Repeat steps 2 through 3 to configure date
and time settings.
5.
Press (A) to exit the setting screen.
Switching Between 12-hour
and 24-hour Timekeeping
1.
Hold down (A) for about two seconds.
Release the button when [SET] stops
flashing.
2.
Press (C) four times until the current
setting ([12H] or [24H]) is flashing on the
display.
3.
Press (D) to toggle the setting between
[12H] (12-hour timekeeping) and [24H]
(24-hour timekeeping).
4.
Press (A) to exit the setting screen.
Note
While 12-hour timekeeping is
●
selected, [P] will be displayed for p.m.
times.
Operation Guide 5554

Illumination Light

The watch has an LED light that you can turn
on for reading in the dark.
Illuminating the Face
Manually
Pressing (L) turns on illumination.
The LED light will turn off automatically if the
●
alarm starts to sound.

Auto Light

If Auto Light is enabled, the face illumination
will turn on automatically whenever the watch
is positioned at an angle of 40 degrees or
more.
Important!
Auto Light may not operate properly
●
when the watch is at a horizontal angle
of 15 degrees or greater from
horizontal as shown in the illustration
below.
Electro-static charge or magnetism
●
can interfere with proper auto light
operation. If this happens, try lowering
your arm and then angle it towards
your face again.
When moving the watch you may note
●
a slight rattling sound. This is due to
operation of the auto light switch,
which determines the current
orientation of the watch. It does not
indicate malfunction.
Note
Auto Light is disabled when any one of
●
the conditions below exists.
Alarm, timer alert, or other beeper
ー
sounding
Hand movement operation is
ー
progress
Configuring the Auto Light
Setting
Each time (L) is held down for about three
seconds in the Timekeeping Mode, Auto Light
will toggle between enabled and disabled.
Auto Light remains enabled for
●
approximately six hours. After that, is
becomes disabled automatically.
On
40
degrees
or more
Off
18