1.excellent sound effects 2.dust-proof design 3.1 year guarantee 4.good after sevice

Mini USB speaker ,Work with all sound source with 3.5 audio interface product like : MP3 ,Computer ,mobile phone ,CD player etc1) Frequency range:90Hz - 20 kHz 2) Output :2.5W+2.5W3) distortion: 0.3% 1W 1KHz4) Signal to noise ratio≥60dB5)Sensitive : ≥80dB6)Power : USB 5V

USB 2.0 mini speaker