Acceptable, but not always ideal
I bought this light when I bought my NOOK. If you simply use it with the NOOK alone, it works great and stays securely clipped to the reader. If you use a cover, however, then the clip isn't so secure. It slips a great deal and you have to pause frequently to readjust it. It is a flexible light, however, which does come in handy. You can adjust it so that you don't have any glare on your screen.
irishlasstn
Murfreesboro, TN