Our company is mainly supplying portable mini speakers, etc, our factory is famous in China, because we can produce the best quality mini speakers. Our mini speaker system is mainly exported to European and American market, welcome to buy our mini computer speakers online, and you will get cheap price with good service.   Item Name: Space Walker Speaker-Red Other Name: Wasp Mini Speaker Model No.: W-201 Description: 1.Max. Ouput:        3W         2.Frequency response:100Hz_18KHz            3.Loading Impedance: 40mm*2/4              4.Loudspeaker:Outer diameter 45mm,Impedance:4          5.LINE IN interface:3.5mm audio jack                                                                              6.Input: 5V/1000mA,AC power adapter,USB 5V and built-in battery,below than 5.5v