Features •  Play and Plug •  Power LED indicator at the front panel •  Listen privately by using the headphone jack •  Power ON/OFF switch with volume control •  Suitable for iPod, MP3/MP4, CD player, Laptop, PCs     and other audio sources Specification •  Power Output: 3W*2 R.M.S. •  Output Impedance: 4 Ohm •  Driver Unit: Full range 2.5" •  Frequency Response: 100Hz~18KHz •  Power Supply: DC 5V (USB power) •  Dimension: 87(W)* 143(H)*99(D) mm