... SD card reader 3.3"x2+4" Speaker, Mini Speaker, 2.1 Computer Speaker, Audio, Home Theater Speaker, Home Speaker, Subwoofer ... is capable to provide high class bass output. 2.1 Channel SoundIncluded 2 Satellite Speakers to Handle higher frequency and 1 Sub-woofer ... "Impedance:4Ω S/N: 85dB Separation:≥62dB, Dimensions:Swoofer: mm satellite: mmFunction: karaoker, USB/SD card reader, FM, remote control, LED ...