Offering a 7-year battery life, with 50 meters water resistance this watch is sure to satisfy your practical side. - 48.1 47 13.9mm Case Size- 89g Weight- Resin Case and Bezel - Stainless Steel Band- Triple-fold Clasp- 50 Meters Water Resistant - Approx. battery life: 7 years on CR2016- Resin Glass- Stopwatch- Alarm/hourly time signal- LED backlight- Calendar: Auto-calendar (set at 28 days for February)- Accuracy: 30 seconds per monthOther features- 12/24-hour format- Regular timekeeping: Hour, minute, second, pm, date, day