Features: Resin Case Stainless Steel Bracelet Quartz Movement Resin Crystal Black Dial Digital Display Dual Time 1/100 Second Stopwatch Daily Alarm Hourly Time Signal Full Auto Calendar Regular Timekeeping Button Operation Tone On/Off 12/24 Hours Display 8 Digit Calculator Month, Day And Date Display Solid Case Back Deployment Clasp Splash Resistant Approximate Case Diameter: 34.4mm Approximate Case Thickness: 8.2mm Approximate Lug Width: 18mm