Casio GB-6900B User's Manual For Watch Functions page 7

To configure the Summer Time (DST) setting ..................................................E-26
Alarms.and.Hourly.Time.Signal........................................................................... E-28
To enter the Alarm Mode................................................................................E-28
To change an alarm setting ............................................................................E-30
To stop a tone/vibration alert operation ..........................................................E-35
To test the alarm ............................................................................................E-36
Stopwatch. . .......................................................................................................... E-37
To enter the Stopwatch Mode ........................................................................E-37
To measure time with the stopwatch ..............................................................E-38
Timer.................................................................................................................... E-40
To enter the Timer Mode ................................................................................E-40
To set the timer start time ..............................................................................E-41
To perform a countdown ................................................................................E-42
To stop a tone/vibration alert operation ..........................................................E-43
E-6