The comfortable and user friendly Plantronics Blackwire C310 is a monaural headset featuring simple inline controls to allow you to answer and end calls at the click of a button. The adjustable lightweight metal headband makes this a durable and comfortable headset and the exclusive Dynamic EQ automatically adjusts settings to provide an exceptional sound quality. A noise cancelling microphone filters out background noise for increased intelligibility so you can ensure your message is always received. This model is optimised for Microsoft Lync Server 2010 and Office Communications Server 2007 applications.