Specifications : output power(rms) : 40w + 10w x 4 ( 8000w p.M.P.O ). Frequency response : 20hz 20khz. S/n ration : >70 db. Separation : >40 db. Speaker unit : 5.25". Satellite drive size : 3" x 4. Fm frequency scan range :. 87.5Mhz - 108mhz. Power consumption : 80w. Features. Usb/sd card reader, auto play mp3 music. With 5.25" Subwoofer driver, a powerful deep bass. Satellite have 3'' full-frequency speakers. Full-function remote control, in your hand. Led display/fm tuner. Compatible with dvd/cd/vcd/mp3/pc/mobile/laptop. Volume, bass and treble control.