powerwatch

  • This Body Heat-Powered Smartwatch Gets One Thing Very Right

    This Body Heat-Powered Smartwatch Gets One Thing Very Right

    One of the most interesting gadgets I’ve tested in the past few years was the Matrix PowerWatch: a fitness-tracking timepiece powered only by the wearer’s body heat. The battery-free technology was neat, but the watch’s limited functionality wasn’t. Matrix Industries’ new PowerWatch X promises to be a more useful and capable wearable, but even with…