Bluetooth 5.0 transmission technology:The Bluetooth car adapter uses the newly developed Bluetooth V5.0 chip, which has the advantages of faster connection, more stable signal reception, better anti-interference performance and lower power consumption, etc. And is widely compatible with any Bluetooth-enabled device, as well as any 12-24V vehicle.Turn Your Car into A Mobile PartyThe car FM transmitter is equipped with a metal frame and built-in microphone, and adopts CVC noise reduction technology to create full-duplex sound quality, providing you with a different listening experience. Also our LED display has a built-in breathing light function, you can clearly see the button in the dark and switch the color you like to flash with it. (When you don't need the light, press to the last light color to turn off.)Fast and Safe ChargingThis FM transmitter has three USB ports, one Type-C port that supports 5V/3.1A fast charging, another USB port with music icon supports standard charging and reading music files from a U disk, and a universal 12V/ 24V socket. It can charge three devices simultaneously and has overcharge protection for faster and safer charging.Easy to Set UpPlug the car Bluetooth transmitter into your car cigarette lighter, tune your car radio to a blank FM frequency (ranging from 87.5 to 108 MHz), then match this FM transmitter to the same frequency and pair this hands-free car kit with your mobile phone or tablet by Bluetooth. After successful pairing, it will transmits your phone's music to the car audio system. In music playback mode, it will automatically switch to phone mode if there is an incoming call.Hands-free CallingJust press one button to answer/hang up/reject/redial calls. You can use the multi-function buttons to control calls and music, seamlessly switch between calls and music, for safer drive. In addition, it also supports voice navigation for mobile phones.