The Worlds Best-Selling Headset Thanks to Superior Sound Quality and Unsurpassed ComfortThe Supra headset owes its popularity to the fact that it combines light weight with superior sound quality and outstanding comfort. A fully adjustable headband design provides good stability, while a soft ear cushion not only gives optimum comfort but also helps buffer distracting noise.
Supra Monaural headsets (H51), with sound in one ear, are lightweight and are 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 Binaural version (H61), which gives greater clarity by providing sound in both ears.
The Supra Monaural and Binaural Noise-Canceling models (H51N, H61N) have all the features of the standard Supra headsets, but use a unidirectional, noise-canceling mircrophone mounted on a highly flexible stem in place of the voice tube. By eliminating up to 75% of all background noise, the noise-canceling headsets make speech much clearer in noisy environments.

Lightweight (1.6 ounces monaural/2.8 ounces binaural) with fully adjustable headband for extended-wear use

Convenient Quick Disconnect feature lets you walk away from your phone while still wearing your headset

Superior voice tube technology and design, with patented SoundGuard Plus and Call Clarity technology

Monaural and Binaural styles
Note:
An amplifier is required to connect the telephone and headset.