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Confirm that your sleep time settings are correct
If you have enabled the Do Not Disturb while sleeping feature on your Garmin watch, you'll
want to check to make sure that your sleep time settings are configured correctly. Remember that
you will not receive notifications during your sleep window when you have this feature
enabled. For instructions on how check this setting see:
Setting Sleep and Wake Window Times
After making all the necessary adjustments per the above instructions and syncing your device
with the Garmin Connect app, it may also be necessary to power-cycle both your device and
your phone. For rechargeable watches that do not have a power button, plug your device into a
USB power source using the charging cable, then unplug it (this is the equivalent of a restart).
If issues continue to persist,
contact Garmin Product Support
The Heart Rate Sensor on My Watch Is Not
Accurate
Optical heart rate sensors work by using lights that can measure small changes in blood volume
in the capillary layer just below the epidermis (outermost of the three layers that make up the
skin) as blood flows through the wrist area. While Garmin’s wrist heart rate monitor technology
is state of the art, there are inherent limitations with the technology that may cause some of the
heart rate readings to be inaccurate under certain circumstances.
The information below describes the main reasons that can affect heart rate accuracy as well as
ways to potentially improve it.
Important Notice:
Garmin Optical Heart Rate Sensor Accuracy Disclaimer
SKIP TO:
CERTAIN ACTIVITIES CAN AFFECT HEART RATE PERFORMANCE
