2.1 series Speaker, Multimedia Speaker,USD Port, SD Card input 2.1 series Speaker, Multimedia Speaker S-210COutput Power: 20W + 10Wx 2 (RMS)Frequency Response 35Hz - 20KHz S/N ≥68dB Driver Unit: Subwoofer 4.5" Satellite: 3" x 2 Subwoofer 150W x 225H x 270D(mm)Satellite : 100W x 150H x 110D(mm)Function Spec. Power,VOL,Treble,LED& remote Control