Heart Rate Features
The Descent device has a wrist-based heart rate monitor and is also compatible with chest heart rate monitors
(sold separately). You can view heart rate data on the heart rate widget. If both wrist-based heart rate and chest
heart rate data are available when you start an activity, your device uses the chest heart rate data.
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: While diving, the device 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 device.
• See
Tips for Erratic Heart Rate Data, page 54
for more information about wrist-based heart rate.
• See
Tips for Erratic Pulse Oximeter Data, page 70
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.
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 107
).
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.
54
Heart Rate Features