Functions: The bluetooth module is made for Z4 Just plug the 12pin connector into the socket back of your radio You can just Insert this item to the back radio then Connect the red wire to 12V +, the black wire to 12V-. Match your phone or pad to bluetooth module. And Choose Aux from your radio, then you can use your phone to through car speakers. You can hear music from your phone / pad / mp3 (They should have blueooth function). The product supports efficient music transmission, version 5.0, compatible with the following versions Compatible for: 2004-2010 for (E60): 5-Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT & M5 (Sedan and Touring) 2003-2010 for (E63) (E64): 6-Series: 630Ci, 630i, 645ci, 650i, M6 (Coupe and Cabriolet / Convertible) 2002-2008 for (E65) (E66): 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li (and crude oil) for M-ASK, ASK-CD and for 1er Serie (E87, E88, E81, E82), Serie 3 (E90-E91-E92) colour: black Material: plastic Package Contents: 1 set * Microphone Note: 1. Please make sure that this connector of 12-pin socket casing fits for your car before you bid 2. Please make sure that this only works with Unit with "MODE" button. It's not compatible with old units without MODE button or cassette or Navigation Players. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.