If you are passionate about computers and electronics, if you are at the cutting edge of technology and no detail escapes you, buy Apple Series 9 Smart Watch Black 45 mm at the best price. Type: SmartwatchColor: BlackMaterial: AluminumFeatures: AccelerometerBuilt-in speakersTouchscreenAmbient light sensorGyroscopeAltimeterBuilt-in microphoneSleep monitorMagnetic chargeBlood oxygen level sensorDisplay with rounded cornersBattery type: IntegratedLitio IonConnectivity: BluetoothWi-FiGPSNFCGlonassBeiDouGalileoCompatible: SiriBody: 45 mmShape: RectangularCamera/Photo Camera: NoWireless Charger: YesFM Radio: NoWater Resistant: 50 mFunctions: Heart Rate MonitorUSB Connection: NoStrap: RemovableNot included: Mobile Network ConnectionFlash Memory: 64 MB