Features:Resin CaseResin StrapQuartz MovementResin CrystalBlack DialDigital DisplayDual TimeMoon PhaseTide Graph1/100-Second StopwatchCountdown TimerMulti-Function AlarmsLED BacklightFull Auto-CalendarButton Operation Tone On/OffRegular Timekeeping12/24 Hours DisplayMonth, Day And Date DisplayScrewed Case BackBuckle Clasp100m Water ResistanceApproximate Case Diameter: 48.6mmApproximate Case Thickness: 15.2mmÂ