Features:Resin CaseResin StrapQuartz MovementResin CrystalBlack DialDigital DisplayDual Time1/100 Second StopwatchCountdown TimerHourly Time Signal5 Multi Function AlarmsAfterglowFull Auto CalendarRegular Timekeeping12/24 Hours DisplayDay And Date DisplayScrewed Case BackBuckle Clasp100m Water ResistanceApproximate Case Diameter: 51.2mmApproximate Case Thickness: 15.7mm