DescriptionFeatures:1. Fitment: The Bluetooth music adapter is a replacement for A3 A4 A5 A6 A7 S3 S4 Q3 Q5 Q7, perfectly matching your car.2. Function: When the car is started, the audio aux adapter automatically connects to the last paired device, more practical.3. Noise Reduction: Built-in noise reduction circuit provides excellent sound quality, clarity and no noise, stable and reliable.4. High Quality Material: The audio cable is made of high quality ABS and copper material, wear resistant, high toughness and durable.5. Easy Installation: Easy to install, just plug and play, lightweight and portable, convenient to use, saving time and energy.Specification:Item Type: Audio AUX Adapter_x005fMaterial: ABS+Copper_x005fColor: Black_x005fOperating Voltage: DC5V_x005fOperating Current: 25-50mA_x005fBluetooth Version: 5.0_x005fInterface Type: AMI/MDI_x005fFitment: Replacement for A3 A4 A5 A6 A7 S3 S4 Q3 Q5 Q7Note:Only replacement for MMI 2G multimedia system stereo host._x005fOnly replacement for car models before 2011 and equipped with MDI interface.