After you open the Heart Rate app, tap the Measure button on the screen to measure your heart rate. Wait until the watch gets a stable heart rate value.
If All-Day Heart Rate is enabled, the watch periodically measures and records your heart rate data. The Heart Rate app always displays the latest heart rate. You can view the all-day heart rate curve and heart rate interval distribution.
Precautions:
To ensure measurement accuracy, please wear the watch correctly as instructed. Keep the skin in contact with your watch clean and avoid exposure to sunscreen.