Features: Bio-Based Resin Case Silicon Strap Solar Powered Caliber: 3513 Mineral Crystal Black Dial Digital Display Low-Temperature Resistant Altimeter Barometer Digital Compass Thermometer World Time Sunrise, Sunset Time Display 1/10-Second Stopwatch Countdown Timer 5 Daily Alarms Hourly Time Signal LED Backlight Full Auto-Calendar Button Operation Tone On/Off Power Saving Battery Level Indicator Regular Timekeeping Direction Bezel 12/24 Hours Display Month, Day And Date Display Screwed Case Back Buckle Clasp 100m Water Resistance Approximate Case Diameter: 51.70 mm Approximate Case Thickness: 15.10 mm nbsp;