... And excellent illumination of the book pages. I have the lamp now already 2-3 years. And so am very satisfied. Flaring I notice now and then, but can be relatively well fix by replacing the batteries. At first I was thinking of a production error, since the flicker went off after a few hours of reading. After replacing the batteries, it took about 100 hours to read the light was weaker and the flickering went off again. Battery batteries last shorter than normal alkaline AAA. We take the lamps with you on holiday - are pretty small and fit in your pocket. Och they clamp to the bed or on my Facebook Seat. Ans book itself not in Paper Books, the focus is unfavorable. The lamp is a hardcover book good, but also for e-book readers it works well. Since it can come to mirror reflections, at readers with a matt surface but less.