Dual USB Ports and Type C Ports Bluetooth car adapter equipped with 2 USB ports (one for charging 5V/3.1A and one for reading USB data) and 1 Type C port (5V/3.1A), you can charge two devices with different ports simultaneously. Built in overcurrent protection, overvoltage protection, intelligent temperature control, and short circuit protection will effectively ensure safe charging.Handheld FM Bluetooth Transmitter The cigarette lighter Bluetooth adapter connects to the phone via Bluetooth, allowing for one click answering/redialing/hanging up or rejecting calls. The built-in microphone enables clearer hands-free communication, and the high-definition sound quality of Bluetooth 5.0 is built-in. When you play music or navigate, there will be no static electricity, and it sounds as good as home stereo or Bluetooth headphonesCar Radio Adapte & Music Player You don't even need any wires, just plug the bluetooth 5.3 fm transmitter for car into the device and turn on the vehicle. Afterwards, you can pair it with a Bluetooth enabled smartphone. Long press the multifunctional button to adjust volume, select songs, or adjust FM frequency, which is very suitable for cars without Bluetooth music playback function.Car Battery Voltage Detection When the car cigarette lighter is inserted, the FM transmitter will display the voltage of the car, allowing you to monitor the health status of the car battery at any time and make timely repairs to avoid driving problems and ensure your driving safety.7 Colors LED Ambient Light+1 ColorThis Bluetooth car adapter comes in 7 colors and 1 color loop mode. Compared to wireless FM transmitters that only have one color, our Handsfree Call Car Charger allows you to maintain one color or play colors alternately, providing you with different visual experiences. It is also very suitable for use in the dark.