Matrix PowerWatch 2: Never Charge Your Watch Again (vol. 3!) - YouTube
The PowerWatch 2 delivers GPS powered by your body heat
PowerWatch 2 Luxe - Smart Watch, sports watch, solar / thermoelectric charge, power control, body temperature measurement, GPS and altitude, iOS and Android : Amazon.de: Electronics & Photo
PowerWatch 2: Neue GPS-Smartwatch versorgt sich selbst mit Strom - Notebookcheck.com News