As oxygen % in the blood is such a crucial factor, I believe it is critical to have the reading available on your Garmin watch, similar to your heart rate.
As oxygen % in the blood is such a crucial factor, I believe it is critical to have the reading available on your Garmin watch, similar to your heart rate.
This is a user forum, and unfortunately we can't help you with this. Suggest it to Garmin instead: Submitting an Idea to Garmin