GROM Audio BMWTB3 Adapter for Select BMW Bluetooth car Interface; Auxiliary Android iPod Capable- Trunk Installation Distinctive functionality Plug and play installation. Control your media from stereo or steering wheel. 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 iPod or iPhone integration with optional cables that are sold separately. Integrated Bluetooth Car Interface adds Hands Free Calling and Wireless Audio to the original factory stereo of many cars. *Please see compatible cars in Product Description.