Features:Resin CaseBio-Based Resin StrapQuartz MovementMineral CrystalBlack DialDigital DisplayShock Resistant1/100 Second StopwatchCountdown TimerMulti Function AlarmHourly Time SignalFlash AlertLED BacklightAfterglowRegular TimekeepingFull Auto CalendarGold Ion Plated Bezel12/24 Hours DisplayMonth, Day And Date DisplayScrewed Case BackBuckle Clasp200M Water ResistanceApproximate Case Size (L × W × H): 43.8 × 38.4 × 10.9 mmApproximate Case Diameter: 38.40 mmApproximate Case Thickness: 10.90 mm