USA
Main modes
When measuring your heart rate, use your index
finger to press directly on the sensor ring. Ideally,
place your finger with the middle of your distal
phalanx on it so that it is flat and stable and
make sure that the pulse watch is securely posi-
tioned on your wrist.
Fingers that are very cold or fingers with poor
circulation may interfere with the measurement
of your heart rate.
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