Computer Speaker, Speaker,2.1 Speaker, 1.Output Power ... 20KHz 4.Speaker unit:4"+3"*2 2.1 speaker, computer speaker, multimedia speaker, USB speaker, MP3 speaker, mini speaker ... portable speaker,bluetooth speaker, vibration speaker, speaker box, speaker system, subwoofer speaker,karaoker speaker.2.1 Multimedia Speaker Specification: ... 8X320MM(WxHxD) 4kg6 sets in one Carton Certifications: Computer Speaker