Material: PlasticCable Length: approx.17.5cmBlack: GND-Red: 12V ACC+Bluetooth module connector:12VCompatibility:For A3 A4 A6 A8 TT R8 RNS-ENote:We don't confirm 100% to compatible above car model years, please make sure that connector can fit for your car Before you order it.Feature:- Function via Bluetooth-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 Bluetooth music product suitable for car use.- Adopt Bluetooth 4.0 protocol, backward compatible with 2.0 3.0 4.0 other versions of Bluetooth protocol, can support common MP3 format audio, also support WMA, WAV, FLAC, and other high-quality audio format decoding, non-general ordinary Bluetooth function, can support DSD Large-capacity transmission, stable data transfer between devices, fidelity, designed for music enthusiasts.- In addition, you can use QQ music, cool dog music, 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 Bluetooth module, aux audio source selection, you can play mobile phone music.Note:Please confirm the interface on the back of your CD host before buying.Packing Included:1x 32Pin Bluetooth Adapter Aux cable"