Features: Resin Case Bio-Based Resin Strap Quartz Movement Resin Crystal Black Dial Digital Display Multi Time World Time 5 Daily Alarms Hourly Time Signal Countdown Timer LED Backlight Full Auto Calendar Button Operation Tone On/Off 1/100 Second Stopwatch Regular Timekeeping 12/24 Hours Display Month, Day And Date Display Screwed Case Back Buckle Clasp 30m Water Resistance Approximate Case Diameter: 33.7mm Approximate Case Thickness: 8.6mm