Features: Resin Case Resin Strap Mineral Crystal Digital Display Shock Resistant Electro Luminescent Backlight Afterglow Flash Alert 1/100 Second Stopwatch Countdown Timer Multi Function Alarm Hourly Time Signal Full Auto Calendar 12/24 Hours Display Regular Timekeeping Day And Date Display Screwed Case Back Buckle Clasp 200m Water Resistance Approximate Case Diameter: 38mm Approximate Case Thickness: 11mm Approximate Lug Width: 16mm