Features: 1.Fitment: Bluetooth adapter is fit for 3 Series E90 E91 E92 E93 X1 E60 2003?, which is made according to the prototype of the car. 2.Function: Support insert T card, U disk, Bluetooth wireless audio, AUX input, microphone phone hands free calls. 3.Excellent Features: Stable and smooth transmission, high efficiency, and the hidden function supports online music playback. 4.Characteristics: Intelligent voice noise reduction technology, reducing echoes and noise, signal audio high definition transmission. 5.Portable Design: Car Bluetooth adapter will meet your needs in different occasions, compact size will not take up extra space. Specification: Item Type: Bluetooth Adapter Material: ABS Bluetooth Version: 5.0 Operating Voltage: 12V Working Current: 20MA Sampling Frequency: 44.1/48/96KHz Frequency Response: 20 Hz-20 KHZ Frequency Range: 2.402-2.480GHz Transmission Distance: 15 meters Distortion Rate: 1% Signal to Noise Ratio: 95db Product Features: Audio HD transmission through the original AUX signal Bluetooth version 5.0 supports aptX,aptX HD, and aptX LL Support for TWS (receive mode) AC6925A stereo Bluetooth chip Integrated intelligent voice noise reduction technology to reduce echo and noise Power Supply Mode: 1. Use the original car CD plug 12v power supply, black power is the negative pole, red is the positive pole 2. If the original car is front AUX interface, you can buy the cigarette lighter plug, use the armrest box cigarette lighter car charging interface docking. Application: Fit for 3 Series E90 E91 E92 E93 X1 E60 2003- 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 (Business radio with CD drive) SA 661 (Business radio with CD drive) SA 662 (Business radio)