Wrist-based Heart Rate
Wearing the Device
• Wear the device above your wrist bone.
NOTE: The device should be snug but comfortable. For more accurate heart rate readings, the device should
not move while running or exercising. For pulse oximeter readings, you should remain motionless.
NOTE: The optical sensor is located on the back of the device.
• See
Tips for Erratic Heart Rate Data, page 13
for more information about wrist-based heart rate.
• See
Tips for Erratic Pulse Oximeter Data, page 17
for more information about the pulse oximeter sensor.
• For more information about accuracy, go to
.
• For more information about device wear and care, go to
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 device.
• Avoid wearing sunscreen, lotion, and insect repellent under the device.
• Avoid scratching the heart rate sensor on the back of the device.
• Wear the device above your wrist bone. The device 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 device with fresh water after each workout.
• While exercising, use a silicone band.
Heart Rate Features
13
