Bought this book reading light for my wife. She found its weight perfect, but even so, the bottom hinge wouldn't stay where it's needed to be to read with. It kept falling over the page, and she was constantly having to reposition it. The hinge needs to be a little stiffer. The light is bright enough to read a full page with, but the fault mentioned, tends to eliminate that good point. Also the on/off switch is rather stiff. The power is by a button battery, but as yet has not been replaced. The design is neat,and compact, but flawed enough for us to seek perfection else where. It also wouldn't fit my Kindle, but there is another light out there that will.