Features: 1.The bluetooth module is specially designed fit for Z4/X3/X5. 2.The radio will recognize it automatically, no need to activate the auxiliary input. 3.It is used for wireless transmission of music, navigation, for YouTube and phone. 4.After selecting play on the radio, it will start playing automatically, and it will stop playing after changing. 5.Compact size, lightweight and portable, simple to carry and store. Specification: Condition: 100% Brand New Item Type: Bluetooth AUX Aadapter Material: ABS Color: As picture shown Fitment: Fit for 5 Serie (E39 mit SA 661-650) Fit for 5 Serie (E60, E61) Fit for 6 Serie (E63, E64) Fit for Z4 Serie (E85 mit SA 662) Fit for X3 Serie (E83 mit SA 662) Fit for X5 Serie (E53 mit SA 661-650) Fit for radio model : SA 650 (Radio Business mit CD-Laufwerk) SA 661 (Radio Business mit CD-Laufwerk) SA 662 (Radio Business) Installation: Minimal installation work. The adapter cannot be connected to the back of the radio. No additional power wiring is required. The included Micro can be placed optimally with a 2.5m cable. The radio will automatically recognize it as the CD changer, no need to activate the auxiliary input.