The Latest Bluetooth 5.3-This Bluetooth AUX adapter with the latest Bluetooth 5.3 chip ensures instant pairing and maintains a strong and stable connection. With Bluetooth 5.3 technology, it is backward compatible with Bluetooth 5.0/4.2/4.0/3.0/2.0 devices.Safe Hands-free Calls-Built-in microphone with CVC noise cancellation technology to make sound quality clearer, which makes you enjoy hands-free calling directly through your car speakers. It supports broadcasting voice notifications from your existing navigation app, which makes your driving safer. It supports MP3/WAV/WMA/FLAC/APE and other formats.Double connection & Long Range-This 2 in 1 Bluetooth Wireless Audio Adapter can connect 2 Bluetooth devices at the same time. Besides, it would automatically connect to the last device next time. The transmission distance reaches up to 33 feet (10 meters). You can enjoy pleasant music environment when driving.Large Battery Life-This Bluetooth audio receiver can be fully charged in just 1 hours using the Type-C fast charging cable (included). It supports 6 hours of continuous use to play music or calls when fully charged. You can also use it while charging, so you dont need to woory about the problem of low battery.Wide compatibility-This Bluetooth 5.3 Adapter can convert your old car stereo and desktop PC into Bluetooth-enabled devices, and convert your home wired speakers or headphones into wireless devices. Pair this bluetooth receiver with your smartphone, tablet, laptop or bluetooth speakers/headphones, you can enjoy your favorite streaming music.