About this item This speaker system is with unique mixed sound stereo, which is perfectly applied to teach, guide, shop mall promotion, performance, outdoor activities, etc. Support FM radio for people to listen to the radio. Can be used for MP3 speaker, provides 6 modes for music playing: POP, ROCK, Classic, JAZZ, Bass, and Flat. Completely compatible with USB 1.1/ 2.0 U disk and support TF/ SD/ MMC card reading, it can automatically detect U disk, TF/ SD/ MMC card and automatically play.