Features:Case/Bezel Material: ResinStainless Steel BraceletResin CrystalDigital DisplayChronograph FunctionLED Backlight Afterglow1/100-Second StopwatchDaily AlarmAM/PM DisplayHourly Time SignalAuto-Calendar (Auto Calendar Set At 28 Days For February)12/24-Hour FormatRegular TimekeepingAccuracy: ±30 Seconds Per MonthDay And Date DisplaySolid Case BackFold Over Clasp50M Water ResistanceApproximate Size of case: 43.1 x 41.2 x 10.5mm