Definitive Technology Symphony 1 Over-Ear Bluetooth Wireless Headphones - Black<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Immerse yourself in precision-crafted， audiophile-grade sound wherever you are with the Definitive Technology Symphony 1 executive Bluetooth headphones </span></li><li><span class="a-list-item"> 50mm drivers offer detailed， full-fidelity highs and mids-and rich， deep bass-for a big， natural soundstage </span></li><li><span class="a-list-item"> Convenient Bluetooth connectivity for wireless listening and phone calls </span></li><li><span class="a-list-item"> Closed back， over-ear design seals out external sound while active noise cancellation (ANC) technology dramatically reduces ambient noise. Built-in rechargeable battery lasts up to 15 hours with noise cancellation on </span></li><li><span class="a-list-item"> Refer the User manual available under Product details </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41iVYPbaz2L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41eqIqGjThL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41hDRlE9%2BUL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51WIRz5-WGL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51bFbROkaGL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51L%2BTkOQBiL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51OTgNxsjlL.jpg" noproxy>