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-7900 ...... 52.4 X 50.0 X 17.7 mm / 68.2 g