Features:Resin CaseTough Silicone StrapQuartz MovementMineral CrystalBlack DialDigital DisplayShock Resistant1/100-Second StopwatchCountdown TimerHourly Time SignalMulti-Function AlarmFlash AlertLED BacklightFull Auto-Calendar12/24 Hours DisplayMonth, Day And Date DisplayScrewed Case BackBuckle Clasp200M Water ResistanceApproximate Case size (L × W × H): 49.6 × 43.2 × 12.9 mmApproximate Case Diameter: 43.20 mmApproximate Case Thickness: 12.90 mm