Some have complained that the Jawbone doesn't do much if the person you're calling isn't using one too. Sure, that's true and it's logical as the Jawbone can't fix things if someone is using a stinky headset on the other end. However, the noise reduction on the signal you are sending is nothing short of phenomenal. I've used many Bluetooth earpieces and not one of them comes close to the sound quality that Jawbone can deliver, even in really difficult situations.Points noted previously are valid. The earloop is a little strange but it's not uncomfortable and the USB cord could be designed better. However, relative to the quality of performance overall, these things are trivial. I've used mine for the best part of a year and it has performed flawlessly, particularly with regard to sound quality and battery life.Note: I tried the Jawbone 2 but I had difficulties with it and I'm shopping now as I want a spare original Jawbone. If I don't have my Jawbone with me, I probably won't even answer the phone and will deal with the call later.