Features:Case/Bezel Material: ResinStainless Steel BraceletQuartz MovementMineral CrystalDigital Display1/100-Second StopwatchChronograph FunctionDaily AlarmHourly Time SignalAuto-Calendar12/24-Hour FormatRegular Time KeepingAccuracy: ±30 Seconds Per MonthDay And Date DisplayScrewed Case BackDeployment Clasp30m Water ResistanceApproximate Case Diameter: 35.5mmApproximate Case Thickness: 6mm