The Jabra Evolve 20SE Mono is a professional headset specifically designed to improve conversations. The headset features Premium noise cancellation technology which enhances call clarity by eliminating background noise. The speakers are built for style and comfort with soft ear cushions which is designed to last and reduce office noise. This headset features leatherette ear cushions that creates better seal to the ear and blocks out room noise. The Evolve 20 MS Mono comes with a control unit which supports comfortable and easy access to most used functions such as volume and mute. It is optimized for Microsoft Lync which provides instant “Plug & Play” installation for your headset.Evolve 20SE Mono Features:Mono Headset Made For Voice & MusicOptimized for MS Lync w/ USB AdapterPassive Noise Canceling Speakers w/ Leatherette Ear CushionsNoise Canceling MicrophoneIn-Line Call Controls w/ MuteJabra Xpress CompatibleConnects to PC Via USBFully AdjustableOver-The-Head Wearing StyleCertified by Microsoft