The Plantronics Blackwire C720-M is a USB headset optimized for Microsoft Lync 2010 and Microsoft OCS 2007. It combines corded reliability with wireless freedom, featuring Smart Sensor technology to answer calls when worn and pause media when removed. This headset offers advanced noise-canceling, Digital Signal Processing, and wideband PC audio for exceptional audio quality. Its detachable cable allows for mobile calls, and it provides up to 10 hours of talk time with connectivity to all devices.