Features:Resin CaseResin StrapQuartz MovementCaliber: 3551Resin CrystalBlack DialDigital DisplayApprox. Battery Life: 3 Years On Cr1616Multi TimeWorld Time1/100-Second StopwatchCountdown TimerLed BacklightFull Auto-CalendarButton Operation Tone On/Off12/24 Hours DisplayMonth, Day And Date DisplayScrewed Case BackBuckle ClaspSplash ResistantApproximate Case Diameter: 33.7mmApproximate Case Thickness: 8.6mmApproximate Lug Width : 22mm