AKG K 553 Pro<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Lightweight over-ear design advanced closed-back technology2 (50mm) transducer low impedance2d-axis fold-flat mechanism </span></li><li><span class="a-list-item"> Excellent noise isolation on par with closed-back headphone designs </span></li><li><span class="a-list-item"> Performs well with virtually any headphone connection thanks to low impedance drivers </span></li><li><span class="a-list-item"> Folds flat for storage and transport </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41qHf5lf9HL.jpg" noproxy>