Generating Mobile Energy With The Swing Of A Finger

The Swing Your Energy Charger is a concept mobile battery by designers Song Teaho & Hyejin Lee. The two have estimated approximately 130 swings of the device around one’s index finger is sufficient to generate enough power to fuel an emergency conversation or to last a trip to a charger, though some initial comments on the device have calculated the necessary revolutions into the tens of thousands.

[via Yanko Design]