Enjoy stereo music:bluetooth jack adapter Perfect upgrade for any car or speaker/hifi without bluetooth, high quality hifi sound effect makes music more dynamic and enjoyable, now you can also enjoy music to your old car. Clear ENC noise reduction call:3.5 jack bluetooth receiver two car microphones work together, one microphone can accurately pick up human voice, and the other microphone has the function of collecting background noise, built-in IC filter, effectively filter out more road noise, power noise and other interference so that ENC (environmental noise cancellation) can reduce noise to less than 35dB. Enjoy clearer hands-free calls. Latest Bluetooth 5.3:Bluetooth 5.3 jack receiver can quickly connect to mobile phone and optimize the delay and interference problems of 5.0. Its baud rate is higher