The Bluetooth module is designed for Z4. Simply plug the 16-pin connector into the socket on the back of the radio. Connect the red wire to 12V+ and the black wire to 12V-. Pair your mobile phone with the Bluetooth module, select Aux on the radio, and play music from your phone through the car speakers. Compatible with mobile phones and MP3 devices that have Bluetooth functionality. Fitment: For (E60): 5 Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT & M5 (Sedan and Touring) 2004–2010 For (E63) (E64): 6 Series: 630Ci, 630i, 645ci, 650i, M6 (Coupe and Cabriolet/Convertible) 2003–2010 For (E65) (E66): 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li (including diesel engine models) 2002–2008 Compatible with M-ASK, ASK-CD Suitable for 1 Series (E87, E88, E81, E82), 3 Series (E90, E91, E92) Model years: 2004–2010 Specifications: Voltage input: 5V–12V DC Working current: 600mA Standby current: 20mA DAC resolution: 20bit Harmonic distortion: 0.05% Signal to noise ratio: 90dB Frequency response: 20Hz–20kHz Operating temperature: -35°C to +75°C Includes built-in microphone Color: Black Material: Plastic and electronic components Package Contents: 1 x Bluetooth adapter 1 x Microphone Note: The package includes only the items listed above. Other products are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by ±1–3 cm.