... box speaker "USB/Card Reader,FM Radio Function Output Power: 80W*2 Frequency Response: 20Hz-20K Hz Impedance: 4-8 professional active speaker ... sound systems speaker, professional disco speakers, mini speaker, car speaker, portable speaker, horn speaker, amplifier speaker, subwoofer speaker, camcorder professional Item NO: YM-1012 boom box speakerMaterial: woodenPower ...