I've had this watch now 6 months or so, and thought it was just me so did a lot of searching and found the Pulse Ox, Respiration, and Sleep Tracking on this (and pretty much every) Garmin watch are useless.
They're so wildly inaccurate, for instance I tested the Pulse Ox while at the doctors (which he let me do 3 times kindly) and it was off by 8-12 each time!
The Respiration I wont even waste my time talking about, when doing yoga or breathing exercises the watch seems to think im breathing as if im going for a jog. And this is after sitting there and purposefully breathing steadily to let the watch try get my rhythm.
And the biggest issue with this watch...sleep tracking....I've resorted to using a a Xiaomi Mi band ($35!!!!!) it can track by itself when I nap during the day along with sleep at night and accurately tells me when i get up or am moving a lot. It also positively tracks when I go to sleep, as sometimes I lie in bed for an hour or two. The Garmin....cant do naps, cant accurately tell when you've gone to sleep (if its before what your settings are for bed time then forget about it), doesnt properly track when i have a bad sleep, and when im lying in bed after waking up it doesnt track ive woken.
Don't get me wrong the fitness aspects of the watch are great, the battery life is excellent....it just fails in every other way outside of tracking GPS activities.
