1,Applicable Model: The bluetooth adapter is a replacement for E46 320i, 320ci, 320cic, 323i, 323ci, 323cic, 325i, 325ci, 325cic, 328i, 328ci, 328cic, 330i, 330ci, 330cic 2002‑2006. 2,Function: With this AUX IN Bluetooth adapter, you have the ability to stream music from your external device, such as your smartphone or tablet, via the car stereo. 3,Unique Design: The bluetooth adapter is designed with an integrated amplifier and a noise filter, avoided overload and associated interruption of the connection. 4,Features: Audio HD transmission through the original car AUX signal, Bluetooth version 5.0, support T card, U disk, Bluetooth wireless audio, AUX input, microphone, hands free calling. 5,Easy Installation: Thanks to the simple plug and play installation, you can get started immediately via the Bluetooth connection. Item Type: Bluetooth Adapter Material: ABS Bluetooth Version: 5.0 Working Voltage: 12V Working Current: 20MA Sampling Frequency: 44.1/48/96KHz Frequency Response: 20Hz-20kHz Frequency Range: 2.402-2.480GHz Transmission Distance: Approx. 15m/49.21ft Distortion Rate: ≤1% Signal to Noise Ratio: 95dB Product Features: Audio HD transmission through the original car AUX signal Bluetooth version 5.0 supports aptX, aptX HD, 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 supply negative pole, red is positive pole 2. If the original car is a front mounted AUX interface, you can purchase a cigarettelighter plug and use the cigarette lighter car charging interface of the armrest box to dock.Applicable Model: Fits for E46 320i, 320ci, 320cic, 323i, 323ci, 323cic, 325i, 325ci, 325cic, 328i, 328ci, 328cic, 330i, 330ci, 330cic M3 Coupe, Sedan Convertible 09/2002and 2002 - 2006 Fits for E39 525i, 525iT, 530i, 530iT, 540i, 540iT M5 (Sedan) 09/2002and 2002 - 2003 Fits for E53 X5 3.0, 4.4, 4.6, 4.8 and X5 M 10/2002and 2002 - 2006 Fits for BM54 E39 E46 E53 X5 This AUX line is suitable for large screen stereo host 16:9 . 1 x Bluetooth Adapter 1 x Microphone 1 x Manual 1 x Clip Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.