Hold , and select Settings > Watch Sensors > Wrist Heart Rate.

Status

Enables or disables the wrist heart rate monitor. The default value is Auto, which automatically uses the wrist heart rate monitor unless you pair an external heart rate monitor.

NOTE: Disabling the wrist heart rate monitor also disables the wrist-based pulse oximeter sensor. You can perform a manual reading from the pulse oximeter glance.

Broadcast Heart Rate

Allows you to begin broadcasting your heart rate data to a paired device (Broadcasting Heart Rate to Garmin Devices).

Source Switching

Allows the watch to select the best source of heart rate data when wearing your watch and an external heart rate monitor. For more information, go to garmin.com/dynamicsourceswitching/.

During Swim

Enables or disables the wrist heart rate monitor during swimming activities.