MATRIX PowerWatch, smartwatch that you never have to charge,

https://youtu.be/q-fVyZSZxIw

Matrix PowerWatch - the smartwatch that's powered by you

Published on Nov 14, 2016

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It's a smartwatch that runs off your body heat, so you'll never have to charge it or replace its batteries. A power meter shows you how much power you've generated. Because it directly measures how much energy you're producing, the PowerWatch can accurately measure calories burned.

It's also packed with these amazing features:
Water resistant to 50 meters, great for swimming.
Activity and sleep tracking.
Changeable watch faces.
Run micro-apps.
Automatic time zone adjustment.
Wirelessly sync to your smartphone.