UnitDriver:ф40mm;Impedance:32 15%ohm;Sensitivity:102 3dB(at1KHz);FrequencyRange:20Hz-20KHz;RatedPowerd:20mW; Maximumpower:30mW;S.P.L.:≦5% InputConnection:3.5mmplugplatingnickel;CordLength:1.5 10%mDual-sidestereoheadsetstylewithrealwoodshellCompatiblewithpcportabalemusicplayerUniqueappearancedesignSpecialmaterialdesignAdorncoziness ComfortabletohearStereodynamicsoundSuper-BASSExtentionofmusicpower