Now to describe:
The light can be set in two stages and both stages have their advantages! The light is ehr cool and not so bright and the other is warm and bright! The clamp has a good diameter! They can be both thick books as well as on small thin books terminals! I have it on my Ebook Reader and find really great! A star I must deduct, as the holder of the battery was defective upon delivery! The communication with the seller was great though and I got some of my money back! But would also get a new device!