?Easy to Carry?The size of this Wireless Audio Receiver for Car is very mini, you can carry this adapter around with you, you can easily take it out and use it immediately when you need it. ?Built-in HD Microphone?With a built-in HD microphone, this bluetooth aux adapter allows you to answer or hang up phone calls, pause or play music by simply pressing the power button, eliminating the need to operate a cell phone interface and allowing you to drive safely. ?Transmitter and Receiver?This Bluetooth car adapter is designed with a mode switch, you can switch between Transmitter and Receiver modes with one key, and it will automatically enter the pairing mode after turning on the switch, which is very convenient to use. ?Enjoy Wireless High Quality music?The Bluetooth Receiver for Car converts non-Bluetooth devices to Bluetooth devices for wireless connection, allowing you to enjoy high quality music anytime, anywhere. It can connect to cars, speakers, stereo systems and headphones. ?Bluetooth 5.0 Version for Stable Connection?This Aux Bluetooth Adapter for Car features the latest Bluetooth 5.0 technology, which enables long range transmission and stable connection up to 33 feet (10m), allowing you to enjoy a pleasant music environment while driving.