AVANTEK MM35 Universal FM Transmitter Adapter Car Kit Plug-and-Play Installation - Just plug the FM transmitter into your 3.5mm audio device and adjust the frequency of the FM transmitter in line with the frequency of your car FM radio, the music in your device will be wirelessly transferred to your car stereo system via FM radio signals, and the music in your device. Remote Control Function - Directly point at the dot icon on the left corner of the device to choose song number, change the frequency, start/pause/resume music, decrease/increase volume and select the music mode; the file management system allows users to organize music files for efficient playback. Anti-Interference Processing - Does not produce noise when you make a call, or electric current sound when it is used to stream music, answer hands-free calls or charge electronic devices. Dot-Matrix Screen - Displays song title, FM channel and memory for the last frequency clearly with high-visibility digital readout. USB Charging Port - Can be used as a car USB charger; the USB 2.0 port on the plug supplies up to 1.0A to charge your smart devices, so that you can power up your device while you are talking or listening to music.