Driver Unit:¦µ40mm Speaker Impedance:32¦¸¡À15% Speaker Sensitivity:117dB Speaker Frequency Range:20-20KHz Mic.Sensitivity:-58dB¡À3dB Input Plug Diameter:3.5mm Cord Length:Appr.2.2m ---------------------------- &©|8226;Different fashionable colour options &©|8226;Soft head band and ear pad for max comfort &©|8226;With 3.5mm input plug and USB port for your option &©|8226;Creat HI-FI stereo surround ***ce |