Fitbit Inspire HR vs Alta vs Charge 3: What’s the difference?

There was a time when Fitbit had nine activity trackers in its portfolio, though the company recently retired the Flex, Alta and Zip lines when it launched the Inspire family. The Inspire and Inspire HR sit just below the Charge 3, replacing the Alta HR and Alta, as well as the Flex 2.

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https://www.pocket-lint.com/fitness-trackers/buyers-guides/fitbit/140467-fitbit-alta-hr-vs-charge-3-what-s-the-difference