Features: Stainless Steel Case Resin Strap Tough Solar Movement Mineral Crystal Black Dial Analog Digital Display Tachymeter Scale Neobrite World Time Mobile Link (Wireless Linking Using Bluetooth) Auto Time Adjustment 1/1000 Second Stopwatch Countdown Timer 5 Multi Function Alarms Hourly Time Signal LED: White Button Operation Tone On/Off Battery Level Indicator Hand Shift Feature Regular Timekeeping Full Auto Calendar 12/24 Hours Display Luminous Hands Day And Date Display Solid Case Back Buckle Clasp 100m Water Resistance Approximate Case Diameter: 48mm Approximate Case Thickness: 13.9mm