1. The Bluetooth module is specifically designed for Z4. 2. Simply insert the 16 - pin connector into the socket on the back of the radio. 3. You can insert it into the rear radio, then connect the red wire to 12V+ and the black wire to 12V -. 4. Pair your phone with the Bluetooth module, then select “Aux” from the radio, and then you can use your phone to play music through the car speakers. 5. You can listen to music from your phone or MP3 (they should have Bluetooth functionality). 6. Compatible vehicle models: - (E60) 5 Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT and M5 (sedan and station - wagon versions) from 2004 - 2010 models. - (E63) (E64) 6 Series: 630Ci, 630i, 645ci, 650i, M6 (hard - top and convertible versions) from 2003 - 2010 models. - (E65) (E66): 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li (and models with original oil engines) from 2002 - 2008 models. 7. Suitable for M - ASK, ASK - CD. 8. Suitable for 1 Series (E87, E88, E81, E82), 3 Series (E90 - E91 - E92). 9. Suitable for models from 2004 - 2010. 10. Specifications: - Voltage input: 5V - 12V DC. - Operating current: 600mA. - Standby current: 20mA. - DAC resolution: 20 bits. - Harmonic distortion: 0.05%. - Signal - to - noise ratio: 90dB. - Frequency response: 20HZ - 20KHZ. - Operating temperature: - 35 to + 75℃. 11. Note: It is equipped with a microphone. 12. Color: Black. 13. Material: Plastic + electronic components. 14. Package contents: - 1 Bluetooth adapter. - 1 microphone. 15. Only the above package contents are included, and other items are not included. 16. Note: Light and different monitors may cause the color of the item to vary slightly from the actual object. A measurement error of +/- 1 - 3 cm is allowed.