1Supports bluetooth 5.0, low power consumption, dependable to use. 2Easy to install, just plug and play, no need complicated tools. 3Allows you to hear music from your phone/tablet/mp3 player. 4Used for wireless transmission of music, navigation, for Youtube and phone, etc. 5Button control on radio/steering wheel for easy operation. 6Select play on the radio and it will start playing automatically. If you change it, it will stop playing.1 x Blue Audio Adapter1 x 20Pin Cable2 x WrenchCondition: New_x000D_Item Type: Audio Adapter _x000D_Material: ABS_x000D_Color: As picture shown_x000D_Bluetooth Music Adapter:_x000D_For wireless transmission of music, navigation announcements, for YouTube and phone calls._x000D_Button control on the radio / steering wheel._x000D_Playback starts automatically when selected on the radio, stops when changing to e.g. radio.Speakerphone:_x000D_Answer / end calls using the forward / back button._x000D_In radio mode, the CD changer must be selected manually, the call is automatically accepted._x000D_Supports up to Bluetooth 5.0 for low power consumption_x000D_Fitment:_x000D_Fits for A2 2001-2006_x000D_Fits for A3 8L 8P 1998-2006 _x000D_Fits for A4 B5 B6 B7 1998-2006_x000D_Fits for A6 4B C4 S6 2001-2004_x000D_Fits for A6 ALLRoad 2000-2005_x000D_Fits for A8 S8 D2 1999-2003_x000D_Fits for TT 8N 1998-2006Installation:_x000D_The adapter is invisibly connected to the back of the radio._x000D_No additional wiring for the power supply necessary._x000D_The included micro can be optimally placed with a 2.5m cable._x000D_The radio automatically recognizes it as a CD changer, no coding required. 1Supports bluetooth 5.0, low power consumption, dependable to use. 2Easy to install, just plug and play, no need complicated tools. 3Allows you to hear music from your phone/tablet/mp3 player. 4Used for wireless transmission of music, navigation, for Youtube and phone, etc. 5Button control on radio/steering wheel for easy operation. 6Select play on the radio and it will start playing automatically. If you change it, it will stop playing.1 x Blue Audio Adapter1 x 20Pin Cable2 x Wrench