The hw251h supra plus wideband monaural is optimised for the hard of hearing office professionals and contact centre workers who rely heavily on voip soft phone communications will appreciate the massively increased clarity and comfort level of the hw251h supraplus wideband headset as one of the plantronics series of world class professional headsets this over the head binaural headset is optimised for wideband systems and delivers enhanced all day everyday comfort and reliability a