I bought the first Jawbone for my wife. Her mother always had difficulty hearing her on a cell phone. We no longer have a land line so cellular calls are the only way we keep in touch.This headset made the call home a much more pleasurable experience for both her and her mom.The second one was for me. When I saw how well her Jawbone worked, she bought me one as a present for my birthday.It works well for driving even with the stereo on or the window down. The max noise reduction setting tends to cause an echo at the other end. This can be a source of frustration for the party on the other end.Other than that, we love our Jawbones and recommend them to anyone that uses a wireless headset in a noisy environment. Comments on this review are always welcome.