CASIO G-SHOCK G-7900A-4

52.4 × 50 × 17.7 mm

68.2 g

Resin

Resin Band

Shock Resistant

200-meter water resistance

Low temperature resistant (-20℃)

Approx. battery life: 2 years on CR2025

Mineral Glass

World time 29 time zones (48 cities), daylight saving on/off

Moon data (moon age of the input data, moon phase graph)

Tide graph (tide level for specific date and time)

1/100-second stopwatch (ST1) Measuring capacity: 999:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Other: 5-second countdown auto start

1/100-second stopwatch (ST2) Measuring capacity: 999:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times

Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Others: Auto-repeat, progress beeper

Hourly time signal

5 multi-function alarms (with 1 snooze alarm)

Flash alert Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm, countdown timer progress beeper, and stopwatch auto start

Electro-luminescent backlight Auto light switch, selectable illumination duration (3 seconds or 5 seconds), afterglow

EL:Blue Green

Full auto-calendar (to year 2099)

Button operation tone on/off

Accuracy: ±15 seconds per month

12/24-hour format

Regular timekeeping: Hour, minute, second, pm, month, date, day