Features: Function via Bluetooth-enabled devices No functional limitations of the car radio Allows you to connect an external audio source With the improvement of wireless technology and the subsequent wireless transmission is the trend of the times, The Product is specially made according to the car port, a wireless Bluetooth music product suitable for car use. Adopt Bluetooth 5.0 protocol, backward compatible with 2.0 3.0 4.0 other versions of Bluetooth protocol, can support common MP3 format audio, also support for WMA, for WAV, for FLAC, and other high-quality audio format decoding, non-general ordinary Bluetooth function, can support DSD Large-capacity transmission, stable data transfer between devices, fidelity, designed for music enthusiasts. Applicable Car Models Allows you to stream your music via the bluetooth function of the smartphone to your car stereo in conjunction with AUX. AUX Must be selected or are to be enabled! 12Pin Rear port !!! For BMW E60 E66 E70 E82 E87 E90 E92 For 609 (navigation system) For SA 650 (For BMW Business radio with CD drive) For SA 661 (For BMW Business radio with CD drive) For SA 662 (For BMW Business radio) Package included: 1Pcs Bluetooth Harness Aux Adapter Before you take the order, please check the appearance and socket of the product to make sure that fits your car. Thank you.