I've had my Kindle2 now for a couple of weeks but just used my Mighty Bright Light for the first time last night. I have the M-Edge Executive cover and the Mighty Bright clipped very nicely on the wide spine of the Executive. The Mighty Bright has two light settings which actually controls either one or two very bright white LEDs. I found the the second setting, just one LED is plenty bright enough for me. I wasn't sure how much I'd use the light but I think I'll be using it a lot. Since I've only used it once I really can't speak about battery life. I may end up using rechargeable AAA batteries if the Alkaline don't seem to last long enough. So I give the Mighty Bright two thumbs up!! It matches well with my M-Edge Executive Case...