Huawei Watch GT 4

“SpO2 is usually around those values, to check if it works properly you gotta see if its able to detect a drop in your oxygen saturation when it happens, which is not a scenario you get in your everyday life. I sincerely don't care much about SpO2 parameter, if I'd be in need of checking mine or someone else saturation I would never use a watch. Yet, in a YouTube video the reviewer went on a plan and measured his blood saturation there and GT4 overestimated all values (giving ~98/99 when his saturation dropped due to altitude). Once again, don't care about this parameter but I wouldn't trust that watch in recording it. I'll use this conversation to ask you a few questions about the GT4 if you don't mind, I think that this will work as well to understand if buying it or going for the balance. - I see you answered about the altimeter, thanks for that! Does it also track staircase steps? - is there anything like Readiness? - how's the gym app? What does it do, which infos and functionalities gives? - does the watch allow playback control of Spotify and tidal? (I'm more interested in tidal) - how's the compatibility for no-huawei android phones? (in case you got one). Do you miss out smth? If you can answer some of these question I'd really appreciate!”