[jerlam]

I don't use it on my Garmin, because as you said it dramatically lowers battery life, and often shows up as life-threateningly low. It also doesn't do anything with the data, meaning I only see if it I go into the app and click on the Pulse Ox tile.

I leave it enabled on my Apple Watch though, the battery life is already bad and any irregularities would be shown on the vitals app.