What does it mean???

[Костянтин Дорошенко]

It’s appear when I rich 2000 m., and higher. 9 baro does not have a pulse oximetr.

[isazi]

@костянтин-дорошенко what?

[sartoric]

@костянтин-дорошенко
Guess what … It has not it just do this above 2000

https://www.suunto.com/en-gb/sports/News-Articles-container-page/get-key-info-at-a-glance-with-the-new-outdoor-watch-face/

[Brad_Olwin]

@костянтин-дорошенко It is the %O2 in the atmosphere based on your elevation.