CLEAR SOUND LOSSLESS MUSICBuilt-in Dual microphones design collects sound better than the single; CVC noise cancellation technology effectively reduces noise and echo; Advanced Bluetooth 5.0 chip ensures stable connection and fast transmission. Thus, this bluetooth car adapter will bring you crystal clear calling and phenomenal Hi-fi music streaming while driving.USB-C PD QUICK CHARGE 3 USB PORTSWork as a car charger, it has 3 charging ports: A 18W USB-C (Type-C) PD charging port outputs 5V/3A, 9V/2A, 12V/1.5A max and is able to charge compatible devices to 50% in just 30 minutes; A 5V/2.4A USB port is for the common charge; A USB drive port is on the top which can be also used as charge port. Share the charge port with your friends while listening to music.2.0 LCD SCREEN POWER ON/OFF BUTTONThis FM Transmitter features a big LCD screen that not only displays FM frequency but also car battery voltage, keeping you informed of battery usage. One button to power off, save your effort of plugging or unplugging every time you start and go off your car. Just long press the CH button 3S to turn off the FM transmitter (Note: Charging ports can still be used even power off).HANDS-FREE CALLING VOICE ASSISTANTOnly click the call button to answer/redial/hang up/reject calls; Seamlessly switches between incoming calls and music. You can stay fully focused on the road by using Siri or Google Assistant to make phone calls, send texts or get driving directions. Moreover, this Bluetooth receiver supports broadcasting voice notifications from existed navigation App. You dont have to look at your phone so often anymore.9 COLOR LED BACKLIGHTDo you want your car interiors to look cooler and more amazing The backlight circle design will meet your expectations with its 9 lighting color choices, including red/blue/green/yellow/cyan/purple/white/rainbow/breathing rainbow. With the light, you can find the buttons more accurately and quickly in the dark, ensuring safe driving (Note: The light can be turn off).