Clear sound and lossless music Built-in dual microphone design collects sound better than a single microphone; CVC noise reduction technology effectively reduces noise and echo; advanced Bluetooth 5.0 chip ensures stable connection and fast transmissionspeed. So this car bluetooth adapter will bring you crystal clear calls and extraordinary high-fidelity music streaming while driving. USB-C PD fast charging and 3 USB ports The car bluetooth transmitter has 3 charging ports: One 18W USB-C (Type-C) PD charging port outputs 5V/3A, 9V/2A, 12V/1.5A max and capable of Charge compatible devices to 50% within 30 minutes; 1 5V/2.4A USB portfor normal charging; USB drive port on top, which can also be used as a charging port. Share the charging port with your friends while listening to music. 2.0'' LCD Screen and Power On/Off The ButtonBabacom FM transmitter has a large LCD screen thatnot only displays the FM frequency but also the car battery voltage, allowing you to keep abreast of battery usage. One-key shutdown, saving the trouble of plugging and unplugging the power every time you start and get off the car. Just long pressthe CH key for 3S to turn off the FM transmitter (Note: the charging port can still be used even if the power is off). Hands-free calling and voice assistant Just click the call button to answer/redial/hang up/reject calls, switch between incoming calls and music seamlessly. By using Siri or the Google Assistant to make calls, send texts, or get driving directions, youcan focus on the road. Additionally, this car Bluetooth kit supports broadcasting voice announcements from existing navigation apps. You don't have to look at your phone so often anymore. 9 Colors LED Backlight Do you want to make your car interiorlook cooler and more stunning? The backlit circular design will meet your expectations with its 9 lighting color options including red/blue/green/yellow/cyan/purple/white/rainbow/breathing rainbow. With lights, you can find buttons more accuratelyand quickly in the dark for safe driving (note: lights can be turned off).