PowerWatch 2: Neue GPS-Smartwatch versorgt sich selbst mit Strom - Notebookcheck.com News
Matrix's PowerWatch 2 needs no charger, uses body heat and solar power - The Verge
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