Productsepecifications:1.style:dynamic2.speakerdimension:10 mm3.speakerdiaphragm:9U4.sensitivity:110+-3dB(wheninputting1kHz1mw)(V-input=178mV)5.frequencyrespone:20-20.000Hz6.MAXinputpower:3mW7.impedance:32ohm+-20%8.cordlength:1.2m(51inch)9.plug:plug:3.5mmgolden(silver)-plated3P10.earbud:silicon11.cablematerial:highplasticPVCmaterial12.CE/RoHScertifiedSpecialFeatures:1.newestdesign2.metalhousingwithhighqualityspeaker3.highstereoandclaritysound.4.comfortableeartipstoprotectears5.OEMavailable