EACHTEK Wireless Car FM Music Transmitter MP3 Player Radio Adapter & Car Charger with High Sensitive Real Button Remote Control Plug and play, powered by a standard 12/24 V vehicle DC outlet, transmits audio wirelessly to the car stereo system via FM radio signals Real button high sensitive remote control to control play options, including folder select, effect, and more Integrated USB port on the plug supplies 1.0A to charge your smartphone, tablet, MP3 player, GPS device, or other compatiable devices Includes EACHTEK 1 year standard warranty and support