Features: Resin Case Resin Strap Quartz Movement Caliber: 3517 Resin Crystal Black Dial Digital Display Dual Time 1/100-Second Stopwatch Countdown Timer Daily Alarm Hourly Time Signal LED Backlight Full Auto-Calendar 12/24 Hours Display Month, Day And Date Display Screwed Case Back Buckle Clasp 100m Water Resistance Approximate Case Diameter: 47.2mm Approximate Case Thickness: 12.3mm Approximate Lug Width: 19mm