Dual USB Quick Charge Charge two devices simultaneously with PD3.0 fast charging Compatible with USB Type-C protocol, Quick Charge 3.0/2.0 protocol, and more3 Music Playing Modes with Colorful Backlit Stereo FM transmission technology for high-quality sound Supports WMA, MP3, WAV, FLAC music format files U disk playback, TF card music player, and hands-free callingEasy to Use Automatic power off memory function for seamless music playback One-button subwoofer output and DSP technology for enhanced sound Battery voltage detection for added convenienceBluetooth V5.0 and Wide Compatibility Stable and fast connection with Bluetooth 5.0 technology Compatible with all types of vehicles Supports Apple 2.4A charging specification and more.Excellent HI-FI Crystal Clear Stereo Sound Enjoy excellent HI-FI crystal clear stereo sound in your car with this Bluetooth 5.0 Car FM Transmitter.