Office professionals need crystal-clear sound, all-day wearing comfort and reliability. The Plantronics SupraPlus offers all of this and more, making it one of the world’s most popular headsets. It is available in monaural or binaural style, with a choice of voice-tube or noise-cancelling microphone. The H251N is a monaural design and features a new t-pad giving comfortable, natural support, with the noise canceling option.