1、Support Bluetooth 0 protocol, also compatible with other versions of Bluetooth protocol 0, 0, 0. Fit for MMI 3G / Q5 / A4L / A6L / Q7 / A5 / S 2、It can support common MP3 format audio, and also supports WMA, WAV, FLAC and other high‑quality audio format decoding. More stable connection, remarkable performance, easy to plug and play installation. 3、Match your mobile phone or tablet to the Bluetooth module, then select AUX from the radio, and then you can use your mobile phone to play music through the car speakers. 4、Non‑universal ordinary Bluetooth function, can support DSD large‑capacity transmission, stable data transmission between devices, high fidelity. 5、You can hear music from your phone/tablet/mp3 (they should have Bluetoothcapabilities). Support efficient music transmission, Bluetooth 0 version, if the call comes, you can answer the call, the sound effect is clear. 1 x Car Microphone1 x AUX Bluetooth Adapter  Item Type: Auto Bluetooth Audio CableMaterial: ABSVoltage: DC 12VBluetooth: Bluetooth  5.0Microphone Cable Size: Approx. 150cm/ 59.1in(There will be errors in manual measurement)Fitment: Fit for MMI 3G / Q5 / A4L / A6L / Q7 / A5 / S5