Koss R-10 Home Headphones<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 30 to 20，000 Hz frequency response </span></li><li><span class="a-list-item"> Dynamic driver element for extended frequency response </span></li><li><span class="a-list-item"> Leatherette ear cushions isolate sounds outside and inside ear cups </span></li><li><span class="a-list-item"> Pivoting ear cup for flexible movement </span></li><li><span class="a-list-item"> 0.125-inch and 0.25-inch jacks foster home and portable use </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/" noproxy>