Upgrade your Old Stereo: This Bluetooth aux adapter is perfect solution to turn your old non-Bluetooth stereo system into a wireless streaming device like car/home stereo, speakers and wired headphones. | The Latest Bluetooth 5.0: This Bluetooth car adapter equipped with Bluetooth 5.0 chip which provides higher speed and more stable transmission and high-quality sound, offers a pleasant sound experience within 33ft steady connection range. | Hands-Free Calling: Built-in sensitivity microphone,the Bluetooth aux adapter for car perfectly accepts your voice when you're calling,it also supports voice notification from navigation app,releases your hands that lets you focus on safety driving. | Dual and Auto Connection: The Bluetooth aux receiver can be paired with 2 devices at the same time,you won't miss any calls while listening to music,meanwhile, it will connected the previous connected device when turn on automatically. | Easy to Use and Mini Size: All-in-one multi-function button designed for easy handling calls and playing music,,moreover,designed with slim body and 3.5mm aux jack, get rid of the tangle cables,saving your space and easy to operate. | GUARANTEE: If you have any issue, please let us know and we will try our best solve your problem.