2.1 home theater with fm radio, 1.USB,SD/MMC,FM,remote control+VFD,karaoke ... 150Hz, 120Hz-18KHzDistortion@ REF:<=1%Speaker Unit:Satellite:3"*2Subwoofer:4"Product dismensions:Satellite(W*H*D):110*110*95mmSubwoofer(W* ... theater with built-in USB and SD card reader, FM radio, outside antenna, remote control, LED display2. volume, bass, treble ... cableuser manualremote control 2.1 home theater with fm radio