The best Fitbit devices received a number of new features with Google’s latest software update, and the Versa 4 and Sense 2 got one that's particularly interesting: a new battery-extending ‘dynamic GPS’ feature.
The way the feature works is simple: when you start a run, cycle or other GPS-led workout on your Fitbit Sense 2 or Fitbit Versa 4, the watch starts using its built-in GPS to record your efforts, as normal. However, if your phone is nearby, the dynamic GPS will stop recording on your watch and switch to using your phone’s own GPS to monitor your workouts.
