Features: Resin Case Resin Strap Quartz Movement Resin Crystal Multicolor Dial Digital Display 1/10 Second Stopwatch Daily Alarm Hourly Time Signal LED Backlight Auto Calendar Regular Timekeeping 12/24 Hours Display Day And Date Display Solid Case Back Buckle Clasp Splash Resistance Approximate Case Diameter: 33.5mm Approximate Case Thickness: 9.4mm