Casio Men's GW200MS-1CR G-Force Military Concept Black Digital Watch Reliable quartz movement Tough Solor Power, Dive Timer, Vital Stats Databank, Low Temperature Resistant 3 Daily Alarms, Countdown Timer, 1/100 Second Stopwatch, Auto EL Backlight w/ Afterglow Water resistant to 660 feet (200 M): suitable for recreational scuba diving