I shared your confusion.

Now I’m curious if one can pull that off with simple games if features like high refresh rate and wireless thrown off. Also, price. With that ‘Memory LCD’ of theirs, it costs $100 per unit as per their Twitter.

14 days standby clock, 8 hours active

That’s what PD team claims for 740 mAh battery, it is what cheap mp3 players now have\consume. If there is a space to optimize it further, we’d see even better numbers, but I’m not confident this crank or little solar panel on the surface (whole back panel?) could make it autonomous. Yet, the idea of a handheld that LOVES sunlight is tempting. And, also, the idea of games that are built around slow and infrequent refresh like those minigames on e-books.