Product Description of G-shock Digital Unisex Sports Watch 200 meter water resistant. Auto led light with afterglow, 4 daily alarms and 1 snooze alarm, hourly time signal. Full auto-calendar (pre-programmed until the year 2099), 12/24 hour formats. Battery: cr1220Battery life: 2 years Modu le 5146Size of case/total weight: 55.0 x 51.2 x 16.9mm / 72g