Bluetooth A2DP GROM AUDB3 for Select Audi Adapter Hands Free Wireless Music Streaming car kit; aux Capable Plug and play installation. Control your media from car stereo or steering wheel buttons. Bluetooth Streaming and Handsfree Calls. In hands free mode: accept & reject phone calls, voice dial. Bluetooth Audio streams directly from your phone to the stereo. GROM-BT3 module has two extension ports that can be used for aux-in and HD Radio integration with OPTIONAL cables/dongles that are sold separately. Integrated Bluetooth Car Interface adds Hands Free Calling and Wireless Audio to the original factory stereo of many cars. *Attention: Please see compatible cars in Product Description.