Was fitted to a 2009 A3 but fits other Audi or Seat cars Integrates to the head unit (plug and play.. no wires to cut.) and works off the steering wheel buttons. When in use, display on headunit changes and DIS shows call info. Music muted and calls come through the front speakers. Compatible with Bose. It has worked 100% every time with brill call quality. In original box which includes, control module, wiring loom, mic and booklet. Fiscon Info List is 249 euros.. I'm selling for £165 incl VAT and delivery.