Bests & Worsts Reviews from Amazon

I really really wanted to like these, but they were too laden with elementary functions that were just not that good, not precise enough for what it is they are supposed to help with. They barely fit on my head which to be fair is bigger than average, but not that much bigger, the three lens plates that pop down don't even come close to focusing in tandem to maximize the focal length the item touts in its description not to mention the one closest to your eye is like, impossible to flip down it's so stiff, and the little loupe type round lens is of very poor quality. The range of focal length where items are clear in each view is confining, the light is not intuitively placed nor does it actually maximize it's effectiveness as a gun on the Maginot Line could not turn completely around, this light stops short of being able to illuminate straight down by far. Now the adjustment knob which held it (barely) on my head has fallen off so they lie in a box on the top shelf awaiting the exhaustion of my little project list to deplete by a dozen items or more before I even look at them again. Based on all the positive reviews by which I decided to buy these I don't count out the possibility that I got a lemon, so there's that to consider, however, I still maintain there are just too many basic operational issues. Yoctosun makes a version of this device which I ended up buying a few years later. Just search Yoctosun here on Amazon and you can find those.