Bluetooth V5.0The bluetooth car adapter owns a Bluetooth 5.0 chip and can connect non-bluetooth devices via the 3.5mm AUX adapter. Pairing it with your bluetooth devices via bluetooth to start listening to music or answering calls. It can be used on non-Bluetooth car audio, home audio, speakers, wired headphones, etc. CVC8.0 Noise ReductionThe bluetooth receiver features the latest CVC8.0 noise reduction and digital signal processor (DSP) technology to maximize echo cancellation and reduce background noise, giving you clear call sound. Multiple ConnectionIt can connect 2 devices simultaneously, so you could not miss any calls while enjoying music. Once paired, only it is within wireless range, the aux bluetooth receiver will automatically connect to the last paired bluetooth device. Safe DrivingAnswer/redial/hang up/reject incoming calls quickly and easily with a built-in microphone and a "MFB" button. And existing navigation apps broadcast voice system can also be played hands-free, you do not have to be distracted at all while driving. Long Battery LifeThe bluetooth adapter works for up to 16 hours when using. It only takes 2.5 hours to fully charge with the Type-C fast charging cable in the package, and it can be used while charging.