Jawbone II eliminates noise better than any other headset. The Jawbone II is not only stylish and comfortable, it lets you have crystal clear conversations, even in loud environments. Using best-in-class technology, it accurately separates your speech from the background noise and eliminates the noise without sacrificing audio quality. Different from most technology, the Jawbone II is an incredibly useful, yet elegant personal accessory. Best-in-class technologyThe Jawbone II Voice Activity Sensor (VAS) is able to detect when you're talking, and is able to capture the frequencies of your speech, even in the presence of loud noise. Traditional noise-eliminating headsets use systems that can only guess when you're talking, and fail miserably in loud environments or in the presence of other people talking. The VAS technology accurately identifies your speech signals for a distortion-free conversation. The NoiseAssasin Developed for extreme acoustic environments, such as battlefields and helicopters, the advanced NoiseAssasin technology uses algorithms to accurately model the noise in the environment and eliminate it. Using two microphones and the Voice Activity Sensor (VAS), the Jawbone II Bluetooth headset is able to separate speech from ambient noise with remarkable precision for a crystal clear conversation, even in incredibly noisy situations. Substance and styleThe Jawbone II is the ultimate combination of beauty and technology. The richly detailed design incorporates an invisible button' for a clean look that allows users to operate switches by lightly touching the device. The rectilinear outside shield has a three-dimensional texture and curves gently to follow your face. This edgy design brings together best-in-class noise elimination technology with the award-winning design of the original Jawbone.