... speaker Different color option USB power supply Size: (8*7*7.5cm)*2pcs 2.0 USB mini speaker Features:Appearance ... : simple and portable.Different color choice , making your life more colorful.Suitable to fashinable consumers.USB ... mp4,CD,mobile phone. Technique parameters:Output power:2.5W*2Loudspeaker specification: 2 8Ω 8W full rangeFrequence response: 90Hz - ...