Suunto Race is not a medical device and the blood oxygen level indicated by Suunto Race is not intended for diagnosing or monitoring medical conditions.
You can measure your blood oxygen level with Suunto Race. From the watch face view, swipe up or turn the crown to scroll to and select the Blood oxygen widget.
Blood oxygen level can provide an indication of overtraining or fatigue and the measurement can also be a helpful indicator of high altitude acclimation progress.
Normal blood oxygen levels are between 96% and 99% at sea level. At high altitudes, healthy values can be slightly lower. Successful acclimation to high altitude makes the value increase again.
How to measure your blood oxygen level from the Blood oxygen widget:
You can also measure your blood oxygen level during your Sleep.