Productsepecifications:1.style:dynamic2.speakerdimension:10 mm3.speakerdiaphragm:6U4.sensitivity:112+-3dB(wheninputting1kHz1mw)(V-input=179mV)5.frequencyrespone:20-20.000Hz6.MAXinputpower:3mW7.impedance:32 20%at1KHz0.178V8.cordlength:1.2m(51inch)9.plug:USB(3.5mm/2.5mmplugavailable)10.earbud:silicon11.cablematerial:highplasticPUmaterial12.CE/RoHScertifiedSpecialFeatures:1.newestdesign2.metalhousingwithhighqualityspeaker3.highstereoandclaritysound.4.comfortableeartipstoprotectears5.OEMavailable