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Body heat

Matrix PowerWatch 2

Matrix PowerWatch 2 Uses Solar and Body Heat to Power Heart Rate Monitor, GPS...

Matrix has unveiled a new smartwatch, called the PowerWatch 2, which is loaded with features like step count, heart rate monitor, notification and GPS,...
Matrix PowerWatch X

Matrix PowerWatch: A Smartwatch Powered Only by Your Body Heat

Wearable tech companies are working on better ways to power and charge your devices. Some companies have developed flexible, bendable batteries while others are...