I haven't used it long enough to give a total review, but so far, I am sleeping better. Well, two nights and the third night not so much. I would like to give a full review after a couple of months. When I unpacked the device, it was in perfect condition, except for the clip to put it on clothing. The spring on the clip sprung right out of the clip. My husband is good at fixing things, but he couldn't get it back together. So, if you are looking at something to improve, it would be the clip. It ...