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 or tablet with the Bluetooth module, then select Aux on the radio to play music from your device through the car speakers. Compatible with phones, tablets, or MP3 players 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 Convertible) 2003–2010 For E65/E66: 7 Series – 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li (including diesel engine models) 2002–2008 Compatible with M-ASK, ASK-CD systems Suitable for 1 Series (E87, E88, E81, E82), 3 Series (E90, E91, E92) Suitable for MINI COOPER 2004–2010 Specifications: Voltage input: 5V–12V DC Working current: 600mA Standby current: 20mA DAC resolution: 20bit Total harmonic distortion: 0.05% Signal to noise ratio: 90dB Frequency response: 20Hz–20kHz Working temperature: -35°C to +75°C Note: Includes built-in microphone Color: Black Material: Plastic and electronic components Package Contents: 1 x Bluetooth adapter 1 x Microphone Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1–3cm.