1.[Enjoy Wireless Streaming Music]This car Bluetooth adapter can be connected to non-Bluetooth car audio systems, home stereos, speakers, wired headphones via the 3.5mm AUX adapter; And equipped with a Bluetooth 5.0 chip for stable connection / fast transmission / wide signal range. Just pair it with your phone and start listening to your favorite music! 2.[Intelligent Noise Reduction Tech]Our Bluetooth audio receiver adopts the latest CVC8.0 Noise Cancellation and Digital Signal Processor (DSP) technologies, which can eliminate echo and block out intrusive background noise (such as wind, traffic, or crowds), providing you with crystal-clear calling sounds. 3.[Hands-free Calling & Navigation]A built-in microphone and one MFB button to answer / redial / hang up / reject calls, help you make hands-free calls. And the Bluetooth audio adapter supports broadcasting voice notification from existed navigation App. You dont have to look down the phone on the move. Make sure you drive safely! 4.[Dual Connection]The portable Bluetooth stereo adapter can be paired with 2 devices at the same time. You can enjoy your music and never worry about missing any calls. Once paired, the car receiver will automatically reconnect to your last paired Bluetooth devices, as long as they are within the wireless range.