Features 1.Perfect Fitment: Audio aux cable is replacement for A3 TT A4 S4 A6 A8 A8L 20072014 perfect matching your car has a long service time. 2.Premium Material: Aux cable adapter is made of high quality ABS and metal material rustproof wear resistant high toughness and durable. 3.Bluetooth 4.0: Adopt bluetooth 4.0 version and compatible with 2.0 3.0 4.0 other versions can support DSD large capacity transmission. 4.Function: Wireless audio adapter can support the commonly used MP3 format audio but also support the WMA WAV FLAC and other audio format decoding. 5.Easy Installation: Easy to install no modification is required just plug and play red wire connected to 12V+ black wire connected to 12V. Specification Item Type: BluetoothAudioCableMaterial: ABS and metalBluetooth Version: 4.0 compatible with 2.0 3.0 4.0 other versions of Bluetooth can support the commonly used MP3 format audio but also support the WMA WAV FLAC and other high-quality audio format decoding non-ordinary Bluetooth functions can support DSD large capacity transmission.Fitment:Replacement for A3 TT A4 S4 A6 A8 A8L 20072014 Package List 1 xBluetoothAudioCable