Features:Bio-Based Resin CaseBio-Based Resin StrapSolar PoweredMineral CrystalBlack DialDigital DisplayShock ResistantMud ResistantGPS SignalBluetoothActivities: Multi-SportTraining AnalysisWrist Heart Rate MeasurementBreathing ExerciseDigital CompassStep ReminderFloor Elevation MeasurementAltimeterAltitude Differential MeasurementAltitude GraphBarometric Pressure MeasurementMobile LinkAuto Time AdjustmentEasy Watch SettingTime Zone SettingApproximately 300 World Time CitiesNotification FunctionTraining Analysis DataActivity HistoryLife Log DataSleep Analysis DataTide Graph SettingPhone FinderWorld TimeMoon DataTide GraphSunrise, Sunset Time Display1-Second Stopwatch4 Daily Alarms With SnoozeSmart AlarmLED BacklightFull Auto-CalendarButton Operation Tone On/OffPower SavingBattery Level IndicatorUsing Activity FunctionsAirplane ModeVibratorVibration On/Off12/24 Hours DisplayMonth, Day And Date DisplayScrewed Case BackBuckle Clasp200M Water ResistanceApproximate Case Size (L × W × H): 60.6 × 53.2 × 20.3 mmApproximate Case Diameter: 53.20 mmApproximate Case Thickness: 20.30 mm