Plantronic’s Encore headsets have become the world’s talking point, with more than six million in use today. Featuring a unique Sound Enhancement System^™ (SES), Encore headset users have the option, at the flick of a switch on the headset, to listen to the caller’s normal telephone voice or to adjust the sound for a fuller, richer tone. Encore headsets provide a perfect acoustical fit, adjustable headband, and soft ear cushions for optimum comfort, stability, and fit. The H91, with sound in one ear, is lightweight and ideal for users who may need to confer with colleagues when making or taking a call. For environments where users really need to concentrate on the call, there is a single-cable Binaural version, which gives greater clarity by providing sound in both ears. The Encore Monaural and Binaural Noise-Cancelling models have all the features of the standard Encore headsets, but use a unidirectional, noise-cancelling microphone mounted on a flexible stem in place of the trademark clear and curved Plantronics voice tube. By eliminating up to 75% of all background noise, the noise-cancelling headsets make speech much clearer in noisy environments.