NO HEAT TO CHARGE --- Fit 12V/24V Car cigarette socket.The Audio Adapter and Receiver can fast charge two devices simultaneously via the PD3.0 and QC3.0 port, Aluminum alloy resists to high temperature, Smart Chip with Over-temperature Protection No heat to charge for a long time, Safe to charge at low temperature 3 MUSIC PLAY MODES --- This Radio Adapter Car Kit for car can stream clear stereo music freely in 3 ways--A. Bluetooth Connection; B. USB Flash Disk (32G); C. TF Card (32G), Supports MP3/WMA/FLAC/WAV/APE format BLUETOOTH V5.0 STEREOSOUND --- Bluetooth 5.0 chip establishes ultra secure connection between your phone and FM transmitter Bluetooth for Car Adapter. Enjoying skip-free musics and hands free calls wherever the road takes you CRYSTAL MUSIC STREAMING --- Bluetooth 5.0 transmission is not distorted. The full duplex sound quality with the purity and clarity of the special sound of the DSP technology. Built-in microphones and noise suppression (CVC) tech for clearer Hands-Free Calls LED STRIP --- FM Transmitter Bluetooth car adapter supports LED breathing light, makes driving more fun, glow to amplify the atmosphere and also makes it easier to operate and drive at night. Equipped with an LED voltmeter that shows you the condition of your car battery to keep you up to date on the condition of the vehicle