Plantronics DA80 USB Audio Processor Telephone Headset. Features & details: Modern and sophisticated styling conveys quality and confidence Easy, at-your-fingertips interface enables representatives to bypass on-screen call control menus for better focus on callers Quick disconnect (QD) feature provides walkaway convenience and compatibility with all Plantronics QD-equipped headsets Superior noise and echo cancellation for richer, clearer conversations Acoustic Exposure Algorithms Help You Meet Noise At Work Regulations Free, Open Apis To Add Intelligence Or Inform Work Flows And Business Processes By Building A Contextual Bridge Across Customer Care Ecosystem Downloadable firmware updates and unique serial numbers creating consistent management of devices across your center