Bluetooth Aux Adapter Dongle USB To 3.5mm Jack Car Audio Aux Bluetooth 5.0 Handsfree Kit For Car Receiver BT transmitter Features: Compatibility 1 : Speaker/Headphone/Car audio Compatibility 2 : Laptop/Smartphone/Tablet Transmission distance：10 meters Colour: Black Bluetooth version：Bluetooth V 5.0 Length: 0.35~1.1m extend Bluetooth name: EB01 Interface:USB to 3.5mm jack Material:Zinc Alloy + TPE Operation Guide： 1. Connect the Audio port with a 3.5 mm AUX plug. 2. Connect the power port with a USB plug. 3. Turn on the Bluetooth in your cell phone and find "EB01", then click to pair.