Item Type: USB Speaker <br>Socket: USB+3.5MM <br>Output Power: RMS 3Wx2(THD＜1%) <br>Frequency Response (Hz): 100-20KHz <br>Speaker Unit: 2 x 2 inches, 4 ohms (fully anti-magnetic) <br>Input Current: USB power supply (5V) <br>Signal to Noise Ratio: ≥85dB (A) <br>Main Box Line Length: Approx. 55mm / 2.2in <br>USB Cable Length: Approx. 85mm / 3.3in1、Compatible with notebooks, desktops, laptops, PCs, smart phones, tablets, MP3, MP4 and more devices <br>2、USB power supply and 3.5mm audio input, just plug the USB cable into the device, then plug the 3.5mm socket into the audio device to use <br>3、This USB speaker can work with for Win and for OS X, no drive required, plug and play <br>4、Contain a pair of speakers, laptop USB speakers provide clear and rich stereo effects for your computer <br>5、Totally antimagnetic speaker unit designs can guarantee that the sound is not disturbed1 Pair of USB Speaker