Before using the watch.... Casio (W3), MRG-8000B

MA0804-EB

Operation Guide 5011 (W3)

Before using the watch...

Expose the watch to light.

Your watch runs on electrical power generated from light, which is stored by a chargeable battery. Long-term storage of the watch can cause the battery to run low, so be sure to expose the watch to light before using it for the first time. See “Solar Charging” for more information.

Low Battery Alert

When secondary battery power is low, the second hand of the watch will start to jump at 2-second intervals to let you know that charging is required.

• See “Solar Charging” for more information.

30

Jumps at 2-second intervals.

30

Power Saving

Power Saving causes the watch to enter a sleep state automatically and stop movement of the analog hands in order to save power whenever the watch is left in the dark.

The watch will exit the sleep state if you expose it to light or perform any button operation.

• Though the hands are stopped, the watch continues to keep time internally.

• Note that the watch also may enter the sleep state and stop if the solar panel is blocked from light by your sleeve.

Sleep Level 1

Sleep Level 1 is triggered whenever the watch is left in the dark for about one hour any time between the hours of 10 p.m. and 6 a.m.

In Sleep Level 1:

• The second hand is stopped.

• The hour hand, 24-hour hand, minute hand, and day indicator continue to operate normally.

• Auto Receive is performed normally.

• Alarms and the hourly time signal continue to operate normally.

Sleep Level 2

Sleep Level 2 is triggered whenever the watch is left in the dark while in Sleep Level 1 for six or seven days.

In Sleep Level 2:

• The hour hand, 24-hour hand, and minute hand are stopped.

• If the watch reaches Sleep Level 2 while in the World Time Mode, the hands will move to 12 o’clock and stop when the Home City time (kept internally) reaches midnight.

• Auto Receive is disabled.

• Alarms and the hourly time signal are disabled.

• The day indicator continues to operate normally.

Timekeeping Mode

Modes and Indicators

• To enter the Stopwatch Mode, press the D button.

The shape and markings of the face depend on the watch model.

Hour hand

Timekeeping Mode

Indicator hand

Minute hand

Day of the week hand button button

24-hour hand button button

30

Second hand

Day

For more information, see “How a Radio-controlled

Watch Works”.

Stopwatch Mode

Second hand

• Start

• Stop

Minute hand

• Reset

30

(While reset.)

1/20-second hand

1/20-second timing is performed only for the first minute after you start or restart an elapsed time measurement.

• You also can start a stopwatch elapsed time operation from the Timekeeping Mode by pressing the button.

Alarm Mode

“AL” indicated.

30

30

World Time Mode

City code

30

• Use the C button to enter any other mode besides the Stopwatch

Mode. Each press of the C button cycles between modes as shown in the illustration to the left.

• About 1.5 seconds after you enter a mode, the watch’s hands will start to move to the time setting for that mode. Note that the only operation you can perform while the hands are moving is changing to another mode.

• If you do not perform any operation for about two or three minutes, the watch will revert automatically to the Timekeeping

Mode.

1