Features:Resin CaseResin StrapQuartz MovementMineral CrystalBlack DialDigital DisplayShock ResistantCountdown TimerHourly Time SignalMulti Function AlarmFlash AlertLED BacklightAfterglowFull Auto CalendarRegular Timekeeping1/100 Second Stopwatch12/24 Hours DisplayMonth, Day And Date DisplayScrewed Case BackBuckle Clasp200m Water ResistanceApproximate Case Diameter: 42.8mmApproximate Case Thickness: 13.4mm