Features:Resin CaseResin StrapQuartz MovementResin CrystalBlack DialDigital Display1/100 Second StopwatchDaily AlarmHourly Time SignalLED BacklightAuto CalendarRegular Timekeeping12/24 Hours DisplayDay And Date DisplayScrewed Case BackBuckle Clasp50M Water ResistanceApproximate Case Diameter: 43.20 mmApproximate Case Thickness: 11.00 mm