Features: Resin Case Bio-Based Resin Strap Quartz Movement Mineral Crystal Black Dial Digital Display Shock Resistant Bluetooth Step Count Measurement Mobile Link Auto Time Adjustment 1/100 Second Stopwatch Dual Time Countdown Timer 5 Daily Alarms LED Backlight Afterglow Low Battery Alert 12/24 Hour Display Month, Day And Date Display Screwed Case Back Buckle Clasp 200M Water Resistance Approximate Case Size: 46.30 × 41.50 × 11.00 mm Approximate Case Size: 41.50 mm Approximate Case Thickness: 11.00 mm