1、Plug and play, just plug the 3pin connector into the socket on the back of the radio, quite easy and convenient for you to use. 2、Support Bluetooth 4.0, the car bluetooth module has low power consumption, reliable use. 3、Allows you to listen to music from your phone/tablet/MP3 player, they should have Bluetooth capabilities. 4、The Bluetooth module is suitable for E39 E46 E38 E53 X5, it must give you an perfect audio experience. 5、You only need to plug this item into the rear radio, then connect the red wire to 12V+ and the black wire to 12V‑. 6、Match your phone or tablet with the Bluetooth module, then select Aux from the radio, and then you can use your phone to play music through the car speakers. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store