I have my Charge 5 since last november (2021). Especially in those first months, I checked my sleep-data daily. The graph of the variation of oxygen saturation always was green ("low" variation).
Last weeks I checked again and to my surprise the graphs showed "high" / orange levels of variation throughout the night, the graph being half orange. But ... this now also was the case for nights in those first months I had the charge 5! While in my recollection, at the time the indicated saturation variablility was low (I would have noticed/remembered high levels of variability as I'm aware of sleep-apnea).
To my surprise, this morning everything was "green" again, also the days in the past weeks and those early months (every day, that is) that first indicated high variability!
Whats going on here Fitbit? Did you change the critical levels for high and low???? Don't mess (up) with this!
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