Good while it lasted, which wasn't long
I liked this light a lot-- it was very light, it gently clipped onto the book, the LED light was more than adequate to read by, and the battery life was great. The problem is that before a week of use had gone by, one of the LEDs started to flicker. This caused considerable eye strain. I covered the light with black electrical tape as the remaining LED still provided just enough light to read by. Within a day or two, this LED also started to flicker. There was probably a flaky connection somewhere in the light, but it is not possible to open it up. So it could not be repaired. The flicker was awful-- I just couldn't use the light at that point. Very disappointing. If only it were more reliable, it would be the perfect book light. But I can't give a good review for something that didn't last a week.