Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Reading Light

I bought it this for my Nook. It is the perfect brightnes and can actually see to the bottom of the page unlike other lights I've had. The neck is long enough so you can adjust it to your liking and avoid the glare. I put my light on the top left hand corner and the clamp is quite big but it stays in place. It does add a little weight but not much more then a paper book. Bonus that it comes with extra batteries. I haven't used mine a lot yet so haven't had to replace a battery yet. It's perfect when you are reading when you don't want to turn an overhead light on.