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If your skin is very dry or your underarms are
very hairy, it is recommended that you wet your
finger and the skin on your wrist with a small
amount of water before measuring your heart
rate.
If your heart beats are irregular, it may not be
possible to measure your heart rate or the mea-
surement may be incorrect.
− If no heart rate is shown, restart the heart rate measure-
ment after waiting a brief period.
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