Specific cable kit for retrofitting an original Bluetooth hands-free kit, "Bluetooth only" version for Audi A6 4B Additional parts required: Original Bluetooth control unit Bluetooth antenna Microphone Simple installation of the hands-free kit thanks to precisely manufactured cables There is no difference to the factory OEM hands-free kit Advantages: High-quality audio output (also at high speed) Fully integrated system Sound suppression Control via the radio navigation unit Control via the multifunction steering wheel (if available) Functions: Display of telephone books in the vehicle's DIS Make, accept and end calls Adjustment of the audio gain Language control with the multifunction steering wheel (language module required) Scope of delivery: Cable set Notes: If an RNS-E radio navigation unit with firmware 360 ​​or higher is installed, you have the option of controlling the mobile phone entirely from the navigation unit (such as the comfort functions of the Audi A6 and A8 with the MMI infotainment system) Please note the compatibility with your Bluetooth mobile phone (list of Audi compatibility). A detailed description of the hnadsfree functions can be found in the vehicle infotainment manual, chapter name, telephone number.