Features:Case/Bezel Material: Resin/Gold Tone Stainless SteelBlack IP Stainless Steel BraceletMineral CrystalDigital DisplayChronograph FunctionElectro Luminescent Backlight1/100-Second StopwatchesDaily AlarmAM/PM DisplayHourly Time SignalAuto-Calendar (28 Days For February)12/24-Hours FormatRegular TimekeepingAccuracy: ± 30 Seconds Per MonthDay And Date DisplaySolid Case BackDeployment Clasp30M Water ResistanceApproximate Size Of Case: 38.6 x 36.3 x 9.6mm