About this item Upgrade your Old Stereo: This Bluetooth aux adapter is the perfect solution to turn your old non-Bluetooth stereo system into a wireless streaming device, such as car/home stereo, speakers, or even wired headphones. Note: It's not a Bluetooth transmitter. The Latest Bluetooth 5.0: This Bluetooth car adapter is equipped with a Bluetooth 5.0 chip, which provides faster speed, more stable transmission, and high-quality sound, offering a pleasant listening experience within a steady 33ft connection range. Hands-Free Calling: With a built-in high-sensitivity microphone, the Bluetooth aux adapter clearly captures your voice during calls. It also supports voice notifications from navigation apps, allowing hands-free operation so you can focus on safe driving. Note: Not recommended for use while charging, as it may cause noise. Dual and Auto Connection: The Bluetooth aux receiver can be paired with two devices at the same time, so you wont miss any calls while listening to musi