Make Wired Devices Wireless - The Bluetooth AUX receiver pairs with Bluetooth devices and has a built-in mic for taking hands-free calls. It can turn your old car/home stereo/wired headphones/speakers into wireless. Compatible with most Bluetooth-enabled devices, such as smart phones, tablets, and laptops.Safe Hands-free Calling - Built-in mic for answering calls, it equipped with noise cancellation technology, suppress environmental noise, pick up voices more accurately. One button to answer/hang up calls. This AUX to bluetooth adapter also supports broadcasting voice notification from navigation. Provides you with the safety and convenience of hands-free calling while driving.Upgraded LED Digital Display - The Bluetooth receiver adopts a new LED display design, which displays the real-time remaining power. The RGB ambient light makes it easy to clearly check the status of the Bluetooth AUX adapter even in the dark.Bluetooth 5.3 AUX Receiver for Car - Mini-sized Bluetooth receiver with 3.5mm AUX makes it usable on car/home stereo, and receive wireless music from your phone or tablet. The Bluetooth 5.3 technology to provide a more stable connection and faster signal transmission, audio won’t cut in/out easily. It can be paired with 2 devices at the same time, allowing you to listen to music without missing any incoming calls.Plug and Play - No driver needed, easy to setup. Just plug the audio receiver into the AUX port, power on and enter pairing mode. It can be used continuously for about 12 hours after a full charge, it's easy to meet all-weather and daily commuting entertainment needs, ensuring you can enjoy your favorite wireless content whenever you want.