Heart Rate Features

The Forerunner® device has a wrist-based heart rate monitor and is also compatible with chest heart rate monitors. You can view heart rate data on the heart rate widget. If both wrist-based heart rate and chest heart rate data are available, your device uses the chest heart rate data.

There are several heart rate-related features available in the default widget loop.

Heart rate symbol

Your current heart rate in beats per minute (bpm). The widget also displays a graph of your heart rate for the last four hours, highlighting your highest and lowest heart rate.

Stress symbol

Your current stress level. The device measures your heart rate variability while you are inactive to estimate your stress level. A lower number indicates a lower stress level.

Body battery symbol

Your current Body Battery™ energy level. The device calculates your current energy reserves based on sleep, stress, and activity data. A higher number indicates a higher energy reserve.

Pulse oximeter symbol

The current saturation of oxygen in your blood. Knowing your oxygen saturation can help you determine how your body is adapting to exercise and stress.

NOTE: The pulse oximeter sensor is located on the back of the device.
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