Sony MDR-210LP Open-air Lightweight Headphones w/Unimatch plug<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Lightweight on-the-ear design </span></li><li><span class="a-list-item"> UniMatch plug adapter for mini or full-size headphone jacks </span></li><li><span class="a-list-item"> Single-sided cord， Cable Length - 1.3 m </span></li><li><span class="a-list-item"> Weight: 2.6 oz. (without cord) </span></li><li><span class="a-list-item"> 100Mw， Open ear cups，sony Acoustic Twin Turbo Circuitry </span></li><li><span class="a-list-item"> Freq Resp: 18 Hz-22 Khz </span></li><li><span class="a-list-item"> Freq Resp: 18 Hz-22 Khz，Sony Acoustic Twin Turbo Circuitry </span></li></ul><!--   Loading EDP related metadata  --><div aria-live="polite" class="a-row a-expander-container a-expander-inline-container"><div aria-expanded="false" class="a-expander-content a-expander-extend-content" style="display: none;"><ul class="a-unordered-list a-vertical a-spacing-none"><li><span class="a-list-item">Lightweight</span></li><li><span class="a-list-item">Sony Acoustic Twin Turbo Circuitry</span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31FEJL-soVL.jpg" noproxy></div></div>