Casio G-Shock GLS-6900-1 Digital

Specification
Case / bezel material: Resin
Resin Strap
Shock Resistant
Mineral Glass
200 meters water resistance
Electro sparkling backlight
Auto light switch, dual illuminator, selectable illumination duration, afterglow
Flash alerts
Flash with a buzzer that is an alarm sound, hourly time signal, time-out alarm, countdown timer, countdown timer progress beeper, and stopwatch auto-start
Low temperature resistance (-20°C)
World time
29 time zones (48 cities), daylight saving on/off
Stopwatch 1/100 sec (ST1)
Measuring capacity: 999:59'59.99''
Measuring modes: Elapsed time, split time, 1st-second position time
Others: Auto start
Stopwatch 1/100 sec (ST2)
Measuring capacity: 999:59'59.99''
Measuring modes: Elapsed time, split time, first-second position time
Countdown timer
Unit of measurement: 1 second
Countdown time 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
Fully automatic calendar (until 2099)
12/24 hour format
Operation button sound on/off
Regular timekeeping: Hour, minute, second, pm, month, date, day
Accuracy: ±15 seconds per month
Approximate battery life: 3 years on CR2025

Case size / Total weight
Case size : 53.2×50×17.7mm
Total weight: 67g