The e-paper screen has some great features that make it ideally suited to the world of eReaders. The tech uses little power allowing the reader to run longer and it is very easy to read outside in direct sunlight. The tech also has some clear limitations too. It's not capable of showing video and most of the screens are black and white only. There are some color offerings in the works from firms like Triton, but the colors are muted compared to an LCD.