Casio Mens GD-100-1BDR G-Shock Digital Watch

Specifications:
200M Water Resistant
Shock Resistant
Auto LED Backlight (Super Illuminator)
Multi-time (4 different cities)
World Time
31 time zones (48 cities + UTC), city code display, daylight saving on/off
5 Independent Alarms (one-time or daily)
Hourly Time Signal
Flash alert
Flasher with buzzer that sounds for alarms, hourly time signal, countdown timer time-up alarm, countdown timer progress beeper
1/100 second stopwatch
Measuring capacity: 23:59'59.99?
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit: 1/10 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
Other: progress beeper
Full Auto Calendar (pre-programmed until the year 2099)
12/24 Hour Formats
Button operation tone on/off
Accuracy: +/-15 seconds per month
Battery: CR2025
Approx. battery life: 7 years