Multimedia speaker 1, Wooden& plastic pannel 2. USB, SD, FM, karaoke 3, Knob with mini remote control 4.RMS:30W+10W*5 USB ... / SD,FM Knob control 5.1Ch multimedia speaker Features ... high-quality sound during music, films and games.2,USB/SD Support mp3 format and can add mp4/5 & wma format ...