2.0 CH Computer mini speaker, 1,connect computer,CD,MP3/4 and mobile 2,with earphone jack 3,good stereo effect 2.0 CH Computer mini speaker Model No.:H-200ZB Specification:1.Output Power: 3Wx22.Loudspeaker impedance:4Ω 3.Distortion:0.5%4.S/N: >56dB5.Power supply: USB www.szhighlevel.com