Technology
Fitbit update brings ECG, blood glucose tracking, and Health Metrics for non-paying users – XDA Developers
Fitbit is roling out a massive udpate to Charge 4, Versa 2, Inspire 2, and Sense that brings lots of new features and improvements.

Fitbit is rolling out a massive update to its range of fitness trackers and smartwatches. The latest update adds a new SpO2 watch face and skin temperature tracking to Charge 4, improvements to Health Metrics data presentation, and opens up some of the paid features to more users.
According to Wearable, on Charge 4, the update separates blood oxygen data readings from the sleeping analysis and now shows it on a dedicated watch face. That means users can now see the SpO2 readings right from the device…
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