This is a pretty good book light; not that I have had others to compare it to. The light is bright, and it spreads out over the page well enough that you don't need to adjust it very often. If you are reading in a room with some other light, it is great. In the total dark, you do end up with corners of big books that the light doesn't really get to. The clamp is a little weak. I bought the next model up in price for my daughter, and it has a stronger clamp that grabs the book a lot better. If I ever replace this one, I'll probably upgrade. But overall, just fine for the money.