Casio G-Shock G-7900-1D Digital

Specifications
Case / bezel material: Resin
Resin Band
Shock Resistant
Mineral Glass
200-meter water resistance
Electro-luminescent backlight
Auto light switch, selectable illumination duration (3 seconds or 5 seconds), afterglow
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
Low temperature resistant (-20°C)
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
5 multi-function alarms (with 1 snooze alarm)
Hourly time signal
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping: Hour, minute, second, pm, month, date, day
Accuracy: ±15 seconds per month
Approx. battery life: 2 years on CR2025
Size of case / Total weight
Size of case : 52.4×50×17.7mm
Total weight : 68.2g