We are a manufacture which mainly supplys kinds of USB Mini speaker in China, we are dealing with USB Mini Speakers export trade, and we promise the best price, quality and service about our Channel Speaker System for you, welcome to inquiry about our USB Mini speaker. Item Name: USB2.1 Speaker W-222 Other Name: USB Woofer Model No.: W-222 Size: Woofer:287*204*163MM Satellite:100*153*94MM   Power:DC 5V Description: 1.Output:5W+2.5W*2     2.Frequency response:70Hz--20KHz     3.S/N ratio:>70dB                4.THD:<0.3% at 1W                  5.Separating degree:>45dB