Chronograph-Divers.com

Specification :
1/100-second stopwatch (ST1, ST2)
Measuring capacity: 999:59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
Other: Auto start (ST1 only)
12/24-hour format
Accuracy: ±15 seconds per month
Approx. battery life
2 years on CR2025
Full auto-calendar (to year 2099)
Button operation tone on/off
Countdown timer
Measuring unit: 1/10 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute and 1-hour increments)
Other: Auto-repeat, progress beeper
Electro-luminescent backlight
Auto light switch, selectable illumination duration, afterglow
Flash alert
Flashes with buzzer that sounds for alarms, hourly time signal, countdown time up alarm, countdown timer progress beeper, and stopwatch auto start
Hourly time signal
Low temperature resistant (-20°C)
Multi-function alarms
5 independent multi-function alarms (4 one-time alarms and 1 snooze alarm)
Regular timekeeping
Hour, minute, second, pm, month, date, day
Shock resistant (G-SHOCK)
World Time
29 time zones (48 cities), city code display, daylight saving on/off
Size of case / total weight
G-7900A 52.4 X 50.0 X 17.7 mm / 68.2 g