G-Shock GW-1800DJ-1A9 - Manual (Page 32)

E-31
Countdown Timer
You can set the countdown timer start time within a range
of one to 60 minutes. An alarm sounds when the
countdown reaches zero.
• Calibration signal reception (both auto and manual) is
disabled while a countdown timer operation is in
progress.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C (page E-9).
Minutes
Seconds
1/10 Seconds