Car stereo audio cable for A3 A4 A6 A8 TT with Bluetooth1、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.