Bluetooth 5.0 Transmitter USB AUX Jack The Bluetooth transmitter is a multifunctional device.It can be used as a set to stream music through the car radio.You can plug it in anywhere there is a 3.5mm or USB input. Simple plug and play operation When you connect the adapter to the device with which you want to transmit or receive audio, a blue LED will start flashing.at this point, even if there is no initial reaction, activate the pairing function on the device you want to connect (the adapter does not work with cell phones) and the connection will be established automatically.From there enabled, the adapter will automatically connect to these devices. Easy to use, Strong signal, Smooth sound without delay, Faster transmission than Bluetooth 4. 2, Applicable to all devices with USB or AUX input, clear stereo sound, The transmitter is easy to use and can bequickly connected to other devices, Thanks to its small size, the adapter is practical and takes up little space. Output mode: USB port with 3.5mm audio interface, Receiving distance: 5m, Standard accessories: 3.5mm audio cable. Package contents: 1 Bluetooth 5.0 transmitter, 1 piece 3.5 mm audio cable.