Features:Resin CaseResin StrapQuartz MovementResin CrystalBlack DialDigital Display1/100-Second StopwatchDaily AlarmHourly Time SignalLED LightAuto Calendar12/24 Hours DisplayRegular TimekeepingDay And Date DisplayScrewed Case BackBuckle ClaspSplash ResistanceApproximate Case Diameter: 30.4mmApproximate Case Thickness: 8.6mmApproximate Lug Width: 10mm