The Fitbit Charge 4 is among the better fitness trackers out there, but it's placed awkwardly between the Inspire HR and the Versa 2, overlapping with both in a lot of areas. The lines between the Versa series and the Charge are about to get even blurrier, as the latest firmware update (1.96.29) gives the fitness tracker Smart Wake, dynamic GPS, and a customizable display timeout.

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