Features: Resin Case Resin Strap 8-Digit Calculator Quartz Movement Digital Display Constants For Addition, Subtraction, Multiplication And Division Dual Time Daily Alarm Hourly Time Signals 1/100 Second Stopwatch 12/24 Hours Display Measuring Capacity Auto Calendar Overflow Check Indicated Screwed Case Back Water Resistance Approximate Case Diameter: 34mm Approximate Case Thickness: 8mm