If you're passionate about computers and electronics, if you're on the cutting edge of technology and no detail escapes you, buy Smart Watch Amazfit GTR 3 1,39" at the best price. Type: Smart watchWatch type: Activity wristbandScreen: 1.39 "Color: GrayMaterial: SiliconeAluminumFeatures: Water-resistantAccelerometerBarometerTouchscreenAmbient light sensorGyroscopeBuilt-in microphoneSleep monitorVoice activation5 atmCall and message notificationsAutomatic sleep timer12/24 hour formatMultisportGeomagnetic sensorBlood oxygen level sensorNon-built-in speakersFunctions: Color screenConnectivity: BluetoothGPSGlonassBeiDouGalileoBluetooth 5.1Bluetooth Low EnergyClosing system: BuckleShape: RoundGender: UnisexRechargeable lithium battery: 450 mAhApprox. charging time: 2 hCamera/Photo camera: NoTechnology: AMOLEDResolution: 454 x 454 px326 dpiFM radio: NoNo includes: Wi-FiMobile network connectionApprox. diameter: 46 mmUSB connection: NoApprox. dimensions: 22 mmIncludes: Charger