You are viewing an Audi A4 Concert 3 (also known as the II+) head unit. This particular unit was made in 2008 and is in pristine condition - the unit will come with the code required to unlock it and the instruction manual. Part number: 8E0 035 136 AL. The unit has been removed from my 2001 A4 due to upgrading to the Audi Navigation head unit. If you are upgrading an old Symphony or Concert headunit, I can assure you will be blown away by the increase in sound quality, clarity & volume of this unit - it makes a massive difference. This unit also plays MP3 CD's - navigation through folders and indivudual tracks is very straigt-forward on this unit. This headunit will fit Audi A4 models from 2001 to 2008 (B6 & B7) - If you are fitting the unit to a B6 A4 you will require a wiring adaptor from Kufatec. If you are looking for one of these units in-particular, as im sure you are already aware, they are very hard to come-by - so grab a bargain and a worthwhile OEM upgrade. If you have any questions - please get in touch. Thanks.