Until I read someplace I trust that this not-yet-for-sale thing actually works, I'm goin' with monkey. And signs are that I'm not going to evolve into a more humanoid species anytime soon. Consider:
The completely self-explanatory SolarKindle which harnesses the sun to keep Amazon's eReader powered for up to three months.
In other words, the claimed Amazon 2 months that I (who doesn't turn off wireless) experience as 2 days becomes 3 months. Or 3 days. Or still is 2 days because I hardly ever read outdoors, and avoid full sun.