Casio Men's watch MTG930DA-8VHourly Time Signal. Auto-Calendar. Tough Solar. Module 2638. Gray Display Digital. Stainless steel caseback and bracelet. Atomic Timekeeping. Solar Powered. Band Type Metal. Backlight Auto EL Backlight with Afterglow. Water Resistant Up to 200 Meter. 12/24-Hour Formats. Alarm 4 Daily/1 Snooze. Dial Code Digital. World Time 30 Cities. Stopwatch. Shock Resistant. Case measures 45mm diameter by 16mm thick. Push button deployment clasp. The Casio Atomic Powered watches receive a time calibration signal transmitted from Fort Collins, Colorado. Signal reception is possible within a radius of about 2,000 miles from the Fort Collins transmitter. See manual for an explanation of ideal conditions for setting as well as factors or locations that can create and make reception difficult. 1 year original manufacturer warranty.