Features:Bio-Based Resin CaseBio-Based Resin StrapQuartz MovementMineral CrystalMulticolor DialDigital DisplayShock ResistantFlash AlertAlarms1/100-second stopwatchHourly Time SignalsCountdown TimerLED BacklightFull Auto-Calendar12/24 Hours DisplayMonth, Day And Date DisplayScrewed Case BackBuckle Clasp200M Water ResistanceApproximate Case size (L × W × H): 48.9 × 42.8 × 13.4 mmApproximate Case Diameter: 42.80 mmApproximate Case Thickness: 13.40 mm