Features:Case/Bezel Material: ResinResin StrapQuartz MovementResin CrystalDigital DisplayChronograph FunctionLED Backlight1/100-Second StopwatchFull Automatic Calendar (Automatic Calendar Set To 28 In February)Alarm12/24 Hours DisplayRegular TimekeepingAccuracy: ±30 Seconds Per MonthDay And Date DisplaySolid Case BackBuckle Clasp50M Water ResistanceApproximate Size Of Case: 43.1 x 42.2 x 10.5mm