USB speaker 1.portable usb speaker 2.mini usb speaker 3.usb mini speaker 4.usb pc speaker USB speaker1.portable usb speaker2.mini usb speaker3.usb mini speaker4.usb pc speakerCompact design but simple and elegantprofessional digital audio play, sound clear, bass powerful;magnetically shielded and noise reduction design, minimizes high-frequency interference and the damping in the cabinets, making ...