How to set alarm on G-Shock GA-800 / Casio 5535

Before using this guide, we recommend:

• Download official GA-800 Manual →
• Watch official 5535 GA-800 Manual Online →

All settings are clearly explained and understandable.

To enter the Alarm Mode

Use C to select the Alarm Mode.

To set an alarm time

1. Press D or B to display the setting (–1 through –5, or SIG) you want to change.

2. Hold down A until the hour digits of the current alarm time start to flash (about”two seconds). This is the setting mode.

• This also causes the alarm indicator to appear and turns on the alarm setting.

3. Press C to move the flashing between the hour and minute settings.

4. While a setting is flashing, use D (+) and B (–) to change it.

• While the 12-hour format is selected for timekeeping, a P (PM) indicator will appear for times from noon to 11:59 p.m.

5. Press A to exit the setting mode.

To test the alarm

In the Alarm Mode, hold down D to sound the alarm.

To turn an alarm and the Hourly Time Signal on or off

1. In the Alarm Mode, use D or B to select an alarm or the Hourly Time Signal.

• Each press of D or B cycles between the alarm time screen and the hourly time signal setting screen.

2. Press A to toggle the displayed setting (alarm or hourly time signal) between on and off.

• This will cause the second hand to move to ON or OFF.
• An alarm on indicator will be on the display whenever any one of the five alarms is turned on. Turning on the hourly time signal causes its indicator to appear on the screen.

To stop the alarm

Press any button.