... ,:iso:9001:2008,rohs.fcca icti,gsv hotest sell and high quality wearing headphone with factory price specification: headphone: headphone&headset , computer ... PVC Driver UnitΦ74mmImpedance32 ΩSensitivity115±2dB Frequency Response18Hz-20,000HzMax. Input Power100mWCord Length1.45mPlug Type2.5mm Stereofeatures: 1. High stereo sound quality headphone ...