Speaking as a guy who rarely goes outside, this concept would be very much the same as a regular phone, but it is a neat looking flexible device that doubles as a watch when not in use.

It’s by Seungkyun Woo and Junyi Heo, and wraps around your arm in the normal state, soaking up solar power to keep it going longer. It’s kind of a genius idea to stick solar onto everything in the future, or even a combination of solar and kinetic charging. [Yanko Design]