When Fitbit launched the Charge 4 fitness band, one of the features we found the most interesting was its ability to estimate users' blood oxygen saturation levels through its SpO2 monitor. Users ...
Fitbit announced the Charge 4 this month last year as its most advanced fitness tracker with built-in GPS and SpO2. Data from the latter sensor was previously only accessible in the Fitbit app, but ...
While almost all of us know how oxygen is vital to life, few probably realize that the oxygen is actually distributed throughout our body via our blood. In addition to metrics like heart rate or even ...
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