1. Using Jerry Bluetooth master chip. Bluetooth 5.0 version. high-speed transmission without distortion. and the sound quality can reach high-definition standards. 2. The car Bluetooth music player has wireless music transmission function and is aimed at car audio. Using Bluetooth transmission. you can say goodbye to messy. and you can also play music online. In the era of streaming media. various online APPs are quite convenient. and the audio source is updated in a timely manner. 3. This product is aimed at different brands of models. and is equipped with different connectors and plugs according to the reserved interface behind the car host. The product uses a wide range of voltage input to adapt to different use environments. 4. Bluetooth name: JieRui-BT 5908 5. Bluetooth version: 5.0 6. Voltage: 5-12V 7. Microphone cable length: 1.5 meters 8. If the call comes. you can answer the call. the sound effect is clear. 9. Fits for from 2003 BMW 3 Series (E90. E91. E92. E93) Allows you to stream your music via the Bluetooth function of the mobile phone / smartphone to your car stereo.in conjunction with:AUX must be selectedor are to be enabled! 609 (navigation system) SA 650 (BMW Business radio with CD drive) SA 661 (BMW Business radio with CD drive) SA 662 (BMW Business radio).