BlueTooth A2DP + USB Flash Drive Car Stereo Adapter Interface for select Audi/VW For select VW and Audi vehicles Add Bluetooth Conversation and Music Streaming to the factory radio USB connection input for USB flash drive use Works with all factory radios with the cd changer port. Radio must be external cd changer capable- back of radio has to have cd changer port. Works with the following vehicles: Audi: 2005-2007 A3 (navigation only), 2008-2009 A3, 2006 A4 (navigation only), 2007-2008 A4, 2000-2007 TT (navigation only), 2008 TT. VW: Year 2002 radios have to be double din size, Not compatible with RNS-510 Nav radios, 2007-2010 Eos, 2002-2010 Golf/GTI, 2002-2010 Jetta, 2002-2010 Passat, 2008-2009 Rabbit, 2003-2010 Touareg, 2004-2010 Tiguan