I'd give this little light seven stars if I could.  I suppose it's because I haven't bought a book light since LED tech really came into its own, but these provide great light and despite using 3 AAA batteries are light enough to clip to a paperback and still hold the book comfortably (even lying down, holding the book in the air).  The clip stays secure, the flexible neck provides a lot of versatility and the price cannot be beat.  I bought one for my wife as well and she loves hers, too.  I threw out two old book lights that I paid twice as much for a couple of years back.