Features: Function via BT-enabled devices. No functional limitations of the car radio. Allows you to connect an external audio source. With the improvement of wireless technology and the subsequent wireless transmission is the trend of the times, the store is specially made according to the car port, a wireless BT music product suitable for car use. Adopt BT 5.0 protocol, backward compatible with 2.0 3.0 4.0 5.0 other versions of BT protocol, can support common MP3 format audio, also support for WMA, for WAV, for FLAC, and other high-quality audio format decoding, non-general ordinary BT function, can support DSD Large-capacity transmission, stable data transfer between devices, fidelity, designed for music enthusiasts. In addition, you can use watching movies, map navigation, etc. Installation: Red power cable connected to 12V+. Black power cable connected to 12V-. plug into the CD player Jack (please confirm corresponding socket), mobile phone is connected with the BT module, aux audio source selection, you can play mobile phone music. Interface: 3Pin to BT Module. Cable length: 23m Applicable models: Replacement for BMW (E46) 2002 - 2006: 320i, 320ci, 320cic, 323i, 323ci, 323cic, 325i, 325ci, 325cic, 328i, 328ci, 328cic, 330i, 330ci, 330cic & M3 (Coupe, Sedan & Convertible) 09/2002+ . Replacement for BMW (E39) 2002 - 2003: 525i, 525iT, 530i, 530iT, 540i, 540iT & M5 (Sedan) 09/2002+ . Replacement for BMW (E53) 2002 - 2006 : X5 3.0, 4.4, 4.6, 4.8 and X5 M 10/2002+ . Specifications: Item Size: 23cm Model Name: BT 3pin Out Power: 6w Interface: BT Material Type: plastic Voltage: 12V Item Type: Cables, Adapters & Sockets Special Features: car BT adapter Length: 23cm Packing List: 1PCS BT Aux cable