Logitech USB Headset Stereo H650E

In-Call LED Red-Light Indicator : Located on the backside of the boom mic, this red light provides a visual alert to those behind you that you are on a call, preventing accidental disturbances during calls. With Microsoft Lync deployments Quick-Access In-line Controller : Control the call with answer/end, volume up/down and mute buttons. The volume-up button is strategically built higher than the others providing a point of reference for your fingers and allowing you to control the call without looking away from your work Optimized : For Microsoft Lync : Compatible with most leading UC platforms. These headphones ensure enterprise-quality audio and an integrated experience with most all business-grade UC platforms Flat No-Tangle Cable : Avoid cord tangles so you can put your headphones on quickly and easily without the mess Acoustic Echo Cancelation and Noise-Cancelling Microphone : Optimized mic so you can hear and be heard even in noisy workspaces