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• Wear the watch above your wrist bone.
NOTE: The watch should be snug but comfortable. For more accurate heart rate readings, the watch should
not shift while running or exercising. For pulse oximeter readings, you should remain motionless.
NOTE: While diving, the watch should stay in contact with your skin, and it should not bump into other wrist-
worn devices.
NOTE: The optical sensor is located on the back of the watch.
• See Tips for Erratic Heart Rate Data, page 71 for more information about wrist-based heart rate.
• See Tips for Erratic Pulse Oximeter Data, page 84 for more information about the pulse oximeter sensor.
• For more information about accuracy, go to garmin.com/ataccuracy.
• For more information about watch wear and care, go to www.garmin.com/fitandcare.
Tips for Erratic Heart Rate Data
If the heart rate data is erratic or does not appear, you can try these tips.
• Clean and dry your arm before putting on the watch.
• Avoid wearing sunscreen, lotion, and insect repellent under the watch.
• Avoid scratching the heart rate sensor on the back of the watch.
• Wear the watch above your wrist bone. The watch should be snug but comfortable.
• Wait until the icon is solid before starting your activity.
• Warm up for 5 to 10 minutes and get a heart rate reading before starting your activity.
NOTE: In cold environments, warm up indoors.
• Rinse the watch with fresh water after each workout.
Viewing the Heart Rate Widget
1 From the watch face, press UP or DOWN to view the heart rate widget.
NOTE: You may need to add the widget to your widget loop (Customizing the Widget Loop, page 121).
2 Press START to view your current heart rate in beats per minute (bpm) and a graph of your heart rate for the
last 4 hours.
3 Press DOWN to view your average resting heart rate values for the last 7 days.
Heart Rate Features 71
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