2.0 USB mini speaker Simple style, patent 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 , ... mp3,mp4,CD,mobile phone. Technique parameters:Output power:2.5W*2Loudspeaker specification: 2 8Ω 8W full rangeFrequence response: 90Hz - 20KHzSensitivity: ...