Fitbit finally turns on SpO2 sensors and begins tracking blood oxygen levels


After first debuting an SpO2 sensor in its first smartwatch back in 2017, Fitbit has finally begun to leverage it –and it’s starred tracking blood oxygen levels. In a quiet rollout – one Fitbit has officially confirmed – users on Reddit have noticed their Ionic, Versa series and Charge 3 trackers all providing blood oxygen…

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