Features: 1.Function via Bluetooth?enabled devices, plug and play, simple to operate and convenient for using. 2.No functional limitations of the car radio, allows you to connect an external audio source, and you can hear music from your phone/pad/mp3. 3.Adopt Bluetooth 5.0 protocol, backward compatible with 2.0 3.0 4.0 other versions of Bluetooth 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 Bluetooth function. 4.Can support DSD large?capacity transmission, stable data transfer between devices, fidelity, designed for music enthusiasts. 5.With the improvement of wireless technology and the subsequent wireless transmission is the trend of the times. Specially made according to the car port, a wireless Bluetooth music product suitable for car use. 6.In addition, you can use watching movies, map navigation, etc, which is practical to use. Specification: Condition: 100% Brand New_x000D_ Item Type: Bluetooth AUX Aadapter _x000D_ Material: ABS_x000D_ Color: As picture shown_x000D_ Installation:_x000D_ _x000D_ The red power cord is connected to 12V+;_x000D_ The black power cord is connected to 12V-;_x000D_ 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._x000D_ Compatible:_x000D_ Compatible for RNS-E navigation installed in for A3/A4/A6/A8/R8/TT, etc._x000D_ Compatible for RNS-E navigation built into for Lam-borgh-ini Ga-llardo_x000D_ Compatible for RNS-E TV tuner connector 32 pins