Casio G-Shock Black Dial Black Resin Multi Quartz Men's Watch AWGM510BB-1A Imported Multi-Band Atomic Timekeeping (US, UK, Germany, Japan, China), Tough Solar Power, Shock Resistant 200M Water Resistant, Full Auto LED Light with Afterglow, Neo-brite Luminous Hands and Markers, World Time 5 Daily Alarms, Hourly Time Signal, 1/100 second stopwatch, Countdown Timer Full Auto Calendar (pre-programmed until the year 2099), 12/24 Hour Formats, Button operation tone on/off (tentative) Accuracy: +/-15 seconds per month (with no signal calibration), Storage Battery: Solar Rechargeable Battery, Module 5230, Size of case/total weight: 52.0 x 46.4 x 14.9mm / 56.4g