[Quick Charge 3.0]: This car auxiliary Bluetooth adapter supports QC 3.0 charging and PD charging. It is 4 times faster than a standard charger and can charge compatible devices to 80% in 35 minutes. $ [3 music playback modes]: Bluetooth 5.0 car radio adapter supports 3 music playback modes: Bluetooth, U disk or microSD card. WMA MP3 WAV APE FLAC music formats are supported. $ [Enjoy free calls]: Answer calls with one key, making it easier and safer to answer calls while driving [7-color LED backlight version]: Support 7-color LED backlight, including red/green/blue/yellow-green/purple/cyan, this wireless hands-free car kit will provide you with visually stunning color display, This is a good way to match the existing colors in the car. $ [Safety function]: The Bluetooth FM transmitter is equipped with a voltmeter, which can display the status of your car battery. When your car is driving and driving, the voltage should be between 11V and 13V. $ [Lossless decoding] Built-in high-performance decoding module, with Bluetooth 5.0 lossless transmission, high resolution, high-performance stereo, music is more shocking