Jawbone Noise Shield Bluetooth Headset (Black) OEM [Bulk Packaged] Advanced, military-grade noise-canceling system continuously adapts adapts to your environment Award-winning modern industrial design by Yves Behar Charges via proprietary USB cable it was comfortable and worked for awhile, but isn't a solution if you're moving around a lot.As with Steve Jobs, Behar is not a fan of protruding buttons. Thus, the Jawbone's two controls are hidden within the headset, requiring you to press either the front or back of the unit to answer calls, adjust volume, or turn on/off the noise cancellation function. While we've read some reviews that complained about these hidden controls, we had no problem in accessing them and appreciated their tactile response. The Jawbone also comes with a custom-fit recharging cable that can either plug into a PC's USB port or into the included wall jack. We enjoyed the flexibility of the USB charging, but wished the cable could have been a more standard USB mini-jack (for those times when you forget to bring the cable along). But the true test of the Jawbone is how its "noise shield" performed. First, a little about this technology. The Jawbone has a small piece of rubbery plastic that protrudes from the bulbous microphone and sits flush against your face, and this sensor tells the Jawbone whether or not you're speaking and can remove background noise from your ongoing speech signal. It can also dynamically adjust the volume of the incoming audio from your call. We tried the Jawbone in a number of different situations, and for the most part it worked flawlessly. Sitting at our desk with the stereo volume cranked up while playing The Chemical Brothers, our call partner was none the wiser. She didn't hear any of the music coming through, and our voice came through strong on her end. While standing on a street corner, the undulations of traffic noise never made it through to our caller, while we noticed an uptick in volume with an increase in traffic noise. However, the Jawbone wasn't perfect, as it doesn't do a great job in windy situations. Still, for the good majority of situations you'll find yourself in--from busy airports to talk-heavy coffeehouses to traffic-laden city streets--t Pros: Amazing background noise masking capabilities--even when faced with loud, thumping music Outstanding adaptive volume as the environment around you changes Options for customizing the fit Cons: Metal earloop frames are hard to quickly put on Non-standard USB connection is a bummer if you forget the cable at home Product Description Designed by the renowned Yves Behar, Jawbone takes mobile style to new heights. Jawbone's perforated shield curves to match the outline of your face while the inside surface is made from medical grade plastic to provide a soft and smooth feel on the skin. Jawbone can be worn on either ear, and you can customize your fit by choosing an earloop and earbud from the several shapes and sizes provided. Jawbone's ergonomic design enhances the acoustic performance and keeps the device lightweight, stable and comfortable. How it works- Jawbone measures the ambient noise around you and automatically enhances the incoming audio and adjusts the volume to make every incoming call sound crystal clear. Using adaptive sound technology, the Jawbone uses two microphones and a voice activity sensor. When placed against the cheek, the sensor detects voice vibrations rather than picking up the sound from your mouth. Excellent sound quality, adaptive noise cancellation, catchy design and comfortable fit.