Dorie Osborn 2008-7-22 2002-3-2 The most versatile headset ever! The innovative Plantronics DuoPro offers all day comfort and best-in-class sound quality. The H171 is the convertible model with superior voice tube microphone. New ergonomic innovations offer unsurpassed comfort. 11935 text/html 1.0 EN H171 DuoPro Convertible Headset text EZ-NetTools EZ-NetTools specializes in providing professional custom web site design and ecommerce services that you can easily maintain.