LARGE CONTROL BUTTON & BRIGHT BREATHING LIGHTS - The enlarged mechanical control button of this wireless car Bluetooth adapter makes it easier to answer/reject/end/redial hands-free calls, and increase/decrease the volume with a simple turn. The beautiful three-color ambient lights around add to the atmosphere and make it easier for you to find the buttons when night falls. LED SCREEN & 12-HOUR BATTERY LIFE - Equipped with a high-definition display screen, you can know the power and volume of this car Bluetooth aux at a glance. In addition, it has a built-in 12-hour large-capacity battery, saying goodbye to frequent charging. BLUETOOTH 5.3 & NOISE REDUCTION - With the latest Bluetooth 5.3 chip, this upgraded Bluetooth jack adapter offers faster pairing and more stable connection with less loss of audio quality. In addition, the latest CVC 8.0 noise reduction technology will significantly reduce the volume of road noise, wind and other distractions, providing you with crystal clear voice quality during calls. DUAL CONNECTION & SMART NAVIGATION - Portable 3.5mm jack car bluetooth can be paired with 2 devices simultaneously, never missing any calls while listening to music. And it also supports voice notification push, so you don't need to look at your phone on the go, ensuring your safety. while driving!