Just returned from a 2 week hiking holiday in Nepal (Annapurna Circuit and Poonhill). I had issues trying to get a pulseox reading when above 4000m, no matter how still i sat or during sleep it wouldn’t register a reading for me. Only upon descending down to about 3500 did the sleep readings show up again.
I also lost a few days of hike data as the watch crashed. This was usually upon restarting after pausing it, or at the end when trying to save at the end of the day.
This is highly frustrating. I see a few others have had the saving issue for awhile - has there been a fix?