Function via Bluetooth-enabled devices No functional limitations of the car radio Allows you to connect an external audio source Stream audio from your smartphone to your car stereo Pair your phone with the Bluetooth module and select Aux on your radio Enjoy music from your phone through car speakers Compatible with smartphones and tablets that have Bluetooth functionality Bluetooth 4.0 system, backward compatible with Bluetooth 2.0, 3.0, and 4.0 Supports MP3, WMA, WAV, and FLAC high-quality audio format decoding Supports DSD high-resolution audio transmission Easy to install Fitment: 20042010 for BMW E60 5-Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT, M5 (Sedan and Touring) 20032010 for BMW E63/E64 6-Series: 630Ci, 630i, 645ci, 650i, M6 (Coupe and Convertible) 20022008 for BMW E65/E66 7-Series: 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li Compatible with M-ASK, ASK-CD systems 20042010 for BMW 1/2 Series (E87, E88, E81, E82), 3 Series (E90, E91, E92) Voltage Input: 4.5V14.6V DC Operating Temperature: -35C to +75C DAC Resolution: 20bit Total Harmonic Distortion: 0.05% Signal-to-Noise Ratio: 90dB Frequency Response: 20Hz20kHz Wiring: Black: GND Red: 12V ACC+ Connector: 12Pin Bluetooth module power: 12V Color: Black Material: Plastic Package Contents: 1 Bluetooth Adapter Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 13 cm.