Casio G-Shock Frogman Divers GF-8250-9DR GF-8250-9D Men's Watch Tough Solar Power, Shock Resistant, ISO 200M Water Resistant, Full Auto EL Backlight with Afterglow World Time, Moon Data (moon age of the specific data, moon phase graph), Tide Graph (tide level for specific date and time) Dive time and surface interval measurement function, 1/100 second stopwatch, Countdown timer 4 Daily alarms and 1 Snooze Alarm, Hourly time signal, Battery power indicator, Power saving function, Button Operation Tone on/off Full auto-calendar (pre-programmed until the year 2099), 12/24 hour formats, Accuracy: +/-15 seconds per month, Storage battery: Solar rechargeable battery, Approx. battery life: 10 months on full charge (without further exposure to light), Module: 3266, Size of case / total weight: 52.0 x 50.3 x 18.0mm / 112g