So the Garmins with SPO2 sensors show? Well I googled the question.
*Garmin SpO2* devices
In this instance the on-screen widget *will* offer a blood *oxygen* percentage,
coupled with data on your altitude, to *show* the levels of *oxygen* in the
blood. This is particularly useful for anyone that's into hiking, alpine
sports and going on big expeditions.Jan 9, 2020
Accuracy of Wrist-based Pulse Ox
Pulse Oximetry (Pulse Ox) readings are available for certain Garmin
wearables. It can provide an estimation of the user’s peripheral blood
oxygen saturation (SpO2%) at any given time the feature is accessed. The
feature can also be set to track in a continuous manner during a period
while the user is asleep. For certain devices, it can also be used to track
periodically throughout the day along with a view of the user’s altitude or
elevation.
While every effort is made to ensure a high degree of accuracy, there are
certain limitations that can cause inaccurate measurements. The user’s
physical characteristics, fit of the device, and presence of ambient light
may impact the readings. Garmin may release device software over time to
improve aspects of the measurements. The Pulse Ox data is not intended to
be used for medical purposes, nor is it intended to diagnose, treat, cure
or prevent any disease or condition.
Excessive motion and the position of the device can impact the accuracy of
the readings. It is important to keep your arm/sensor still for
approximately one minute for best accuracy.
As to the Medical Device issue;
Review the following top FAQs related to the Pulse Ox feature found in
several Garmin products.
NOTE: Pulse Ox data is intended for recreational use only. Pulse Ox data
should not be treated as any type of medical diagnosis or treatment of
disease. This is not a medical device, see Garmin.com/ataccuracy
I'm perfectly content with the limitations as described above. And I would
compare from time to time with a finger clip.
