The engineers have been hard at work at the battery life — the goal is to get 100 minutes of power for every 1 minute of manual hand-cranking. I don’t know about you, but that sounds like a pretty good ROI on energy spent.
In order to achiever that kind of energy-efficiency, however, the designers have had to change to a specialized style of LCD display:
instead of layering color filters, groups them next to each other, resulting in a blurrier picture, but lower backlight requirements.
Source: Engadget