Grado GR8 In-Ear Headphones (Discontinued by Manufacturer)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Driver - Moving armature - A proprietary wide bandwidth moving armature design provides the listener with unsurpassed performance. Small size allows earphone to nestle well within the ear canal， maintaining an excellent air seal for improved bass and reduction of outside noise while delivering secure， dependable comfort. </span></li><li><span class="a-list-item"> Connector type - standard mini plug (gold over brass) </span></li><li><span class="a-list-item"> Frequency range - 20 -20，000 Hz </span></li><li><span class="a-list-item"> Sensitivity - 118db/1mw </span></li><li><span class="a-list-item"> Impedance - 120 ohms </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41AkkFH1JkL.jpg" noproxy>