Sennheiser Century SC 660 USB CTRL Premium Premium Dual-Sided Wired Headset (504555)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Optimized for major softphone brands - with integrated call control and USB connector</li><li>Sennheiser voice clarity - wideband sound for a natural listening experience</li><li>Ultra noise canceling microphone for perfect speech transmission</li><li>Sound-enhancement profiles - perfect for communication and music</li><li>Dual-sided high-quality neodymium speakers for outstanding high definition stereo sound</li><li>Premium dual-sided wired headset optimized for Microsoft Lync， with built-in call control unit</li><li>Comfortable fit that lasts all day and a solid sense of quality</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41u%2B4AMu0YL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31pQjTFm0%2BL.jpg" noproxy>