Features: Resin Case Blue Resin Strap Quartz Movement Mineral Crystal Blue Dial Digital Display Shock Resistant World Time 1/100-Second Stopwatch Countdown Timer 5 Daily Alarms Hourly Time Signal LED Backlight Full Auto-Calendar Button Operation Tone On/Off 12/24 Hours Display Month, Day And Date Display Screwed Case Back Buckle Clasp 100M Water Resistance Approximate Case Diameter: 39.00 mm Approximate Case Thickness: 14.70 mm nbsp;