If you're passionate about IT and electronics, like being up to date on technology and don't miss even the slightest details, buy Bluetooth Headphones Edifier TWS330 NB Black at an unbeatable price.Approx. autonomy: 15 hours1,5 hours20 hours5 hours4 hoursConnectivity: Bluetooth 5.0BluetoothFrequency response: 20 - 20000 HzCharacteristics: 24 OhmsBuilt-in microphoneWirelessNoise reductionSound intensity: 92 dbConnections: USBUSB-CBattery capacity: 350 mAhType: HeadphonesHeadphones with MicrophoneIn-ear headphonesIn-ear HeadphonesColour: BlackMaterial: PlasticType of headphones: In-ear headphonesIP rating: IP54Range: 10 mFrequency: 20 - 20000 HzBattery: YesHeadphones: BinauralControl type: DynamicYear: 2021Recommended use: Calls and musicBattery type: Litio IonRechargeable lithium battery