The theory behind this device is pretty great, however in actuality it doesn't perform the way you would like it to. When I purchased this product I was expecting something that I would be able to use in the car with the windows down, or at least the moon roof open. I think just about everybody that I spoke with while I had the windows down asked me "what that noise is."

Now I understand that the technology contained in this device is meant to cancel out 'white noise' and not necessarily wind etc., this is not the main reason I gave it two stars, the reason I gave this device two stars is because the craftsmanship of the headset is cheap. I had one of the ear loops break on me within the first week or so after buying it, luckily they provide you with different ear loops as well as ear buds. In addition, the charging cable was (in my opinion) poorly designed and as a result of plugging and unplugging the charging cable enough times the back segment of the headset has not broken off. Now I have to plug in the charging cable and then wrap the cable itself around the headset lengthwise to the back of the headset doesn't pop off while charging.

And lastly, sometimes the headset will not even turn off, which means if I have it on and go to turn it off (to conserve battery power) then it won't turn off and a day or so later the battery just runs down and finally the device shuts off. I'm sure you can imagine that having the aforementioned charging issues I REALLY don't like having to keep charging it either, so basically this $100 or so device is worthless to me.

I have an old Plantronics BT headset that works as reliable as ever which I now prefer and I got it on a well known auction site for $18 about 3-4 years ago.

So in summary, I don't feel as though the money is worth it for this headset, wait another year or so. Popular Science had a small article about true noise reduction BT headsets recently, so look for those in the near future if that is what you are looking for.

I had read all the reviews before purchasing so I was prepared for the ill fitting earpiece. BUY the Jabra ear gels WITH the headset! I cannot find them at Radio Shack as directed in reviews.
The Jawbone is great. I am very happy to finally find a bluetooth that works great after trying so many others.

After a few weeks, the back of the device broke off in the charge, exposing the circuit board and preventing from charging. I super glued it back on and covered the glue mess with black marker.

I ran into someone at work and asked him about his. Sure enough, he had the exact same problem (even used a marker to cover the glue marks).

The other day, I drop it on the ground (not an uncommon occurrence for bluetooth headsets) and the metal ear loop snap off!

This thing is a piece of junk. Even if it never broke, it's difficult to carry in a pocket due to the big ear loop. Also difficult to put on.

I'd recommend avoiding this product.

I just got the Jaw Bone for my birthday. I connect it to the charger and let it charge over night. I try to remove it from the charger and it won't budge. I read the manual and it says nothing about removing it. So I pull a little harder and the charger rips the entire back end off the head set. I still can't get the broken piece to come loose from the charger. WTF!!!

I spent many hours researching the latest and greatest of blue tooth headsets and chose this one based on perceived quality. Price was not a big issue. It is very lightweight which was great. Easy to use as well. The biggest problem was the sound level. You can hear the caller if you are in a quiet place. However, as soon as the level of noise increased in the area you are calling it becomes very difficult to hear. I think the problem is the ear piece. It does not go into the ear, but rather sits on the outside. I have a Plantronics 510 and it worked with my older phone very well. it has an earpiece that goes into the ear and you can set the volume much higher. I only switched because I was getting a lot of static in the headset with the new phone (3G technology may be the issue...I dont know). I would not recommend this headset to anyone working in a potentially noisy environement (driving with the windows open, walking outside, etc)