... , rich, wide 40mm USB 2.1 audio Speaker D0380 Low frequency sound have power, feel warmly Audio signal cable connect to PC, notebook ... , DVD player, cellphone, MP3 player etc audio outputUSB cable connect to PC, notebook, DVD player etc. USB port (USB ... . F.Response 150Hz-20KHz 5. Speaker unit: 2*26. SNR: >= 80 dB7. Power: DC 5 V or USB 5 V 40mm USB 2.1 audio Speaker D0380 ...