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Wake up the watch, press the upper button on the watch face page to go to the app list, and
swipe up or down on the screen to select and open the Blood Oxygen app, where you can
view your most recently measured blood oxygen value and all-day blood oxygen status.
Synchronize the data to the app to view more information. Setting the Blood Oxygen app as a
shortcut card allows you to easily measure your blood oxygen.
While the phone and watch are connected, the following blood oxygen settings can also be
accessed in the Zepp app under Profile > Amazfit T-Rex 2 > Health Monitoring.
Manual blood oxygen measurement
Tap to manually measure your blood oxygen.
Auto Blood Oxygen Monitoring
Go to the Blood Oxygen, swipe up and go to Settings page to enable Auto Blood Oxygen
Monitor. In a resting state, the watch will automatically measure your blood oxygen and
record changes in blood oxygen levels throughout the day.
Low Blood Oxygen Alerts
In a resting state (except sleep), the device will notify you if your blood oxygen falls below
the limit for 10 minutes.
1. After Auto Blood Oxygen Monitor is enabled, enable the Low blood oxygen alerts feature.
2. In the settings for low blood oxygen alerts, the alert value can be adjusted or alerts can be
disabled.
Precautions for SpO2 measurement
1. Wear the watch a distance of one finger away from the carpal and remain still.
2. Wear the watch tightly. For best results, there should be a sensation of pressure from the
watch.
3. Place your arm on a stable surface, for example, on a table, while measuring, with the
screen facing up.
4. Remain still during measurement and focus on the measurement.
5. Factors such as hair, tattoo, shaking, low temperature, and incorrect wearing of the watch
may affect measurement results, and even lead to measurement failure.
6. The measurement range of this watch is 80%-100%. This function is for reference only and
should not be used as the basis for medical diagnosis. If you feel unwell, please seek
professional medical advice.
Stress
The stress index is calculated based on changes in heart rate variability. It is a reference for
health status evaluation. You should rest more when the index is high.
Wake up the watch, go to the app list, and swipe up and down to select and open the Stress
app. In the Stress app on the watch, you can view your most recently measured stress value,
all-day stress status, stress interval distribution, and pressure status over the last seven days.
Synchronize the data to the app to view more information. Setting the Stress app as a shortcut
card allows you to easily measure your stress.
While the phone and watch are connected, the following stress settings can also be accessed
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