Features: 1. Simple to install, just plug and play, no complex tools required. 2. Supports Bluetooth 5.0, low power consumption, reliable to use. 3. Used for wireless transmission of music, navigation, YouTube, and phone calls. 4. Button control compatible with radio and steering wheel for easy operation. 5. Select play on the radio and it will start playing automatically. If you change the source, it will stop playing. Specification: Condition: New Item Type: Audio Adapter Material: ABS Color: As shown in picture Fitment: Fits A2 1999-2005 Fits A3 2001-2006 Fits A4/S4 1998-2006 Fits A6/S6 2001-2004 Fits A8/S8 1999-2003 Fits AllRoad 2000-2005 Fits TT 1999-2005 Fits Chorus 1, Chorus 2, Concert 1, Concert 2, Symphony 1, Symphony 2, Navigation Plus 1 (non-MMI), Navigation Plus 2 (non-MMI), Delta (excluding Delta CC), etc. Note: 1. Before purchasing, ensure the CD player interface and product plug are compatible for normal use. 2. Connect the blue connector to the rear interface of the CD player, and connect the small coil to the CD players power cord. Package List: 1 x Audio Adapter 1 x 20-pin Data Cable 2 x Wrench