![Amazon.com: Matrix BlackOps Watch, Body Heat Powered Fitness Tracker Smart Watch, 50M Dive, Calorie and Step Count, iPhone/Samsung Compatible : Clothing, Shoes & Jewelry Amazon.com: Matrix BlackOps Watch, Body Heat Powered Fitness Tracker Smart Watch, 50M Dive, Calorie and Step Count, iPhone/Samsung Compatible : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/71oZ3ZM8-5L._AC_UL1500_.jpg)
Amazon.com: Matrix BlackOps Watch, Body Heat Powered Fitness Tracker Smart Watch, 50M Dive, Calorie and Step Count, iPhone/Samsung Compatible : Clothing, Shoes & Jewelry
![Amazon.com: Matrix BlackOps Watch, Body Heat Powered Fitness Tracker Smart Watch, 50M Dive, Calorie and Step Count, iPhone/Samsung Compatible : Clothing, Shoes & Jewelry Amazon.com: Matrix BlackOps Watch, Body Heat Powered Fitness Tracker Smart Watch, 50M Dive, Calorie and Step Count, iPhone/Samsung Compatible : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/71xNV-FYW8L._AC_UL1500_.jpg)
Amazon.com: Matrix BlackOps Watch, Body Heat Powered Fitness Tracker Smart Watch, 50M Dive, Calorie and Step Count, iPhone/Samsung Compatible : Clothing, Shoes & Jewelry
![Matrix PowerWatch 2, a smartwatch that charges via body heat and solar energy, unveiled - Gizmochina Matrix PowerWatch 2, a smartwatch that charges via body heat and solar energy, unveiled - Gizmochina](https://www.gizmochina.com/wp-content/uploads/2019/01/matrix-solar-watch.jpg)