Hi all, I have a problem with my charge 5. During the past two nights, it showed me quite high hrat rate for approximately o.5h-1 hour, howerev, I did not receive any high HR notification (it is set up to notify me once heart rate is above 110 bpm). I also noticed that during that time oxygen diagram shows completely flat line, as if it wouldn't measure it at all. Is it possible it's just watch error? Anyone had similar problem?
