Bluetooth Auxiliary Adapter: The Car Bluetooth Adapter is designed to add Bluetooth functionality to your car. It turns your home or or speakers into a hands-free bluetooth device. High Fidelity Sound Quality: Built-in Bluetooth 5.1 chipset, this car Bluetooth auxiliary adapter provides an instant and stable Bluetooth signal connection at a distance of 10 meters, which is clear whether or speaking. With a built-in microphone, this Bluetooth car accessory receiver allows you to enjoy hands-free calls directly through your car speakers. Home Audio Aux Adapter: With this Aux Bluetooth Adapter, you can easily connect traditional speakers and use wireless control on your phone. Plug and Play: The 3.5mm Bluetooth dongle is super easy to use; just plug it into the 3.5mm aux and power it through the USB port, no need to constantly charge the battery! Plug the 3.5mm audio bluetooth dongle into the 3.5 aux to make a bluetooth aux, find the YP04 on your audio source device and connect automatically after first pairing. Our bluetooth receiver allows you to connect 2 phones at the same time and quickly change, share music on 2 phones. Durable and Portable: The Bluetooth kit is compact and 't take up extra space in your car. Adopt spring design, easy to store. Material: alloy colour: black Package Contents: 1 set x Bluetooth receive Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.