Casio General Unisex Watches Poptone LCF-21-4DR - WW Imported 50M Water Resistant, LED Light with Afterglow, World Time 4 Daily Alarms and 1 Snooze Alarm, Hourly Time Signal 1/100 second stopwatch, Countdown Timer, Full auto-calendar (pre-programmed until the year 2039) 12/24 Hour Formats, Accuracy: +/- 30 seconds per month, Battery: SR726W x 2 Approx. battery life: 2 years, Module: 5078, Watch Size: 47.2 x 35.8 x 11.3mm / 34.3g