Function via Bluetooth-enabled devices No functional limitations of the car radio Allows you to connect an external o source It is possible from your smartphone to your car stereo to stream Pair your phone with our bluetooth module,and choose Aux from your radio. You can enjoy music from your phone through car speakers. Work for /for /for , for , for , for , for and any other phones or pads(Pls make sure there is bluetooth function in your phone or pad) Bluetooth 4.0 system, and compatible with other versions of 2.0 3.0 4.0 Bluetooth system, support commonly used MP3 format o, but also support WMA WAV FLAC, and other high-quality o format decoding, non-ordinary Bluetooth functions, can support DSD large capacity transmission. Easy to install. Fitment: 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 ) for M-ASK, ASK-CD and for 1/2 Serie (E87, E88, E81, E82),Serie 3 (E90-E91-E92) Voltage Input:4.5V -14.6V DC Operating Temperature:-35-+75 DAC Resolution:20bit Total Harmonic Distortion:0.05% SN Ratio:90dB Frequency Response:20HZ-20KHZ Black:GND- Red:12V ACC+ Connector:12Pin Bluetooth module connector:12V Colour:Black Material:Plastic Package Contents: 1 * Bluetooth Adapter Only the above package content, other products are not included. Note: Light reflection 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.