Features: White Bio-Based Resin Case White Bio-Based Resin Strap Tough Solar Caliber: 3490 Mineral Crystal Black Dial Digital Display Low Temperature Resistant Radio Controlled Watch Altimeter Digital Compass Thermometer Home Time/World Time Swapping 1/10 Second Stopwatch Sunrise, Sunset Time Display Countdown Timer 5 Daily Alarms LED Backlight Full Auto Calendar Button Operation Tone On/Off Power Saving Battery Level Indicator 12/24 Hours Display Month, Day And Date Display Screwed Case Back Buckle Clasp 100M Water Resistance Approximate Case Diameter: 44.60 mm Approximate Case Thickness: 13.00 mm Approximate Lug Width: 22.00 mm nbsp;