Fitbit Charge 4 gets Dynamic GPS, Smart Wake alarms with the latest update

Fitbit has released a new software update for the Charge 4 fitness band which brings along a couple of useful features. The first one's Dynamic GPS, which allows Charge 4 to use the paired smartphone's GPS sensor if it's nearby to capture route and pace among other stats. This should help save the battery on Charge 4 since it won't use its built-in GPS when you are carrying your phone with you. The second feature is Smart Wake in the Alarms app which avoids waking you during your deep sleep and finds the best time 30 minutes before the set alarm time to wake you up. This is to...

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