Features: 1.AUX and USB two interfaces, AUX interface provides audio, USB interface supports 5V/12V. 2.Connect the AUX plug and the USB plug to the car interface (must be connected at the same time), and then select AUX. 3.Match your phone or pad with the Bluetooth module, and select Aux from your radio, you can play the music in your phone through the car speakers. 4.Plug and play, no programming or driver required, easy to operate and use, bringing you great convenience. 5.Small and compact in size, light weight, easy to carry and store. Specification: Item Type: Car Bluetooth Receiver Material: ABS Color: Black Interface: AUX + USB How to Use: Connect the AUX plug and USB plug together with the car interface, and then select AUX (AUX interface provides audio, USB interface supports 5V/12V, AUX USB must be connected at the same time)