Features:Bio-Based Carbon CaseCloth StrapQuartz MovementMineral CrystalBlack DialDigital DisplayShock ResistantCarbon Core Guard StructureMulti TimeWorld Time1/100-Second StopwatchCountdown Timer5 Alarms (Daily Or One-Time)Hourly Time SignalLED BacklightFull Auto-CalendarButton Operation Tone On/Off12/24 Hours DisplayMonth, Day And Date DisplayScrewed Case BackBuckle Clasp200M Water ResistanceApproximate Case size (L × W × H): 54.9 × 51.9 × 16.1 mmApproximate Case Diameter: 51.90 mmApproximate Case Thickness: 16.10 mm