"Stainless Steel Case and Bracelet Perpetual Calendar 1/20 Second Chronograph Measures up to 60 Minutes 12/24 Hour Time Dual Time Alarm Mineral Glass Crystal Water Resistant to 200 Meters (660 Feet) 120 Day Power Reserve with Full Charge(270 Days with Power Save Function; 82 Hours to Full Charge in Average Lighting) 5 Day Low Charge Warning Bracelet features a Fold Over Safety Clasp with Push Button Release 44mm Case Width (Approximately 1 3/4"")"