Exceptional audio quality coupled with a striking design that is both intuitive and stylish, the Sennheiser MB 660 US MC is a premium wireless headset that delivers an unparalleled experience. Utilising Sennheisers adaptive NoiseGard technology, the MB 660 automatically adjusts levels of noise cancellation to ensure your calls are free from disruptions. Additionally, this headset delivers high quality stereo audio and SpeakFocus technology, with three digital microphones to ensure listeners receive a clear audio experience. Thanks to a comfortable design, easy to use and innovative touchpad controls and a battery life of up to 30 hours, the MB 660 allows you to stay productive for longer.