[CVC8.0 Noise Reduction] The Bluetooth jack adapter features the latest CVC8.0 noise reduction technology and a digital signal processor (DSP) to optimize echo cancellation and reduce background noise, allowing you to enjoy clear sound during your calls. Best gift for men and women and Christmas gift. [Safe Driving] Answer/answer/reject incoming calls quickly and easily with the built-in microphone and "MFB" button. And the voice transmission system for existing navigation applications can also be used in hands-free mode, so you don't need to be distracted while driving. [Bluetooth 5.3] The Bluetooth jack receiver is equipped with a Bluetooth 5.3 chip and can connect non-Bluetooth devices via the 3.5mm AUX port. Pair it with your Bluetooth devices via Bluetooth to start listening to music or taking calls. Can be used on non-Bluetooth car audio systems, home audio systems, speakers, wired headsets, etc. [High Capacity Battery] The Bluetooth car jack adapter works up to 16 hours when