To set up Blood Oxygen (SpO2) Tracking on your watch:
- Open the Gen 2 Wellness watch app
- Enable Blood Oxygen Tracking
- Make sure all the required permissions are granted
To enable background readings, please enable both Sleep Tracking & Blood Oxygen Tracking in your Gen 2 Wellness watch app. Your watch will automatically track your SpO2 during sleep.
Your watch tracks your blood oxygen levels by measuring the reflection of red, green, and infrared light signals coming from the back of your watch.