We’ll update this guide with our findings. GPS running watches represent a step up from fitness trackers: In addition to step counts and distance measurements, GPS watches offer a slew of ...

The best sports watches are a great way to keep track of your progress, whether you're training at home, the gym or in the great outdoors. They come with built-in GPS and altimeters for route ...

Radio trackers have become ... harvesting mechanism to power the GPS and accelerometer. Similar to the mechanical systems found in automatic winding watches, this energy harvester uses a pendulum ...