Features:Case/Bezel Material: Resin/Chrome PlatedStainless Steel BraceletQuartz MovementSapphire CrystalFloral DialDigital DisplayLED Light1/100-Second StopwatchDaily Alarm12/24-Hours DisplayHourly Time SignalAuto Calendar (Set At 28 Days For February)Regular TimekeepingAccuracy: ±30 Seconds Per MonthDay And Date DisplayScrew Down CrownSolid Case BackDeployment Clasp30M Water ResistanceApproximate Case Diameter: 29mmApproximate Case Thickness: 8.6mm