by direct transfer, no loss of music quality. Metal panel on top. bluetooth module integrated in the adapter. supports A2DP, AVRCP and or HFP. AUX input for 3.5mm plug (no control on the radio possible) USB input only for charging search within the title possible (forward or rewind)1. Name: bluetooth adapter for original radio2. Color: Black3. Material: ABS4. Fitment: For A2 A3 8L 8P A4 B5 B6 B7 A6 4B A8 4DService:as usual via the buttons on the radio or steering .Track numbers are displayed until 99, then it starts again at 01.wireless streaming of music via mobile phone (requires bluetooth A2DP standard)The tracks can be controlled via the radio or steering buttons.Additional control via the supplied cable remote control possible.Speakerphone: connects automatically via bluetooth to the handsfree.In adapter mode, the music stops when an incoming call rings and it rings in the loudspeakers.Accepting the conversation via the radio or steering button song.End the call via the radio or steering button Previous song.in radio mode the adapter must be for acceptance.Playback of the caller via the car speakersMicrophone can be placed optimally to the head with the 2.5m cableInstallation:The adapter is simply connected to the CD changer input on the back of the radioThe changer input is also available if the CD changer is not installedThe radio does not have to be mp3-no activation or programming in the workshop necessaryPackage Include1 x USB adapter box1 x Connection cable 8pin approx1 x Hands-free microphone with cable1 x Adapter1 x 3.5mm AUX cable1 x ManualOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.