Features:Resin CaseResin StrapQuartz MovementResin CrystalBlack DialDigital DisplayWorld TimeDaily AlarmHourly Time SignalLED BacklightAfterglowStopwatchPreset TimerButton Operation Tone On/OffFull Auto Calendar12/24 Hours DisplayRegular TimekeepingMonth, Day And Date DisplayScrewed Case BackBuckle Clasp100m Water ResistanceApproximate Case Diameter: 42.1mmApproximate Case Thickness: 12.5mm