Gender Settings
When you first set up the watch, you must choose a
sex. Most fitness and training algorithms are binary. For
the most accurate results, Garmin recommends selecting
your sex assigned at birth. After the initial setup, you can
customize the profile settings in your Garmin Connect
account.
Profile & Privacy: Enables you to customize the data on
your public profile.
User Settings: Sets your sex. If you select Not Specified,
the algorithms that require a binary input will use the
sex you specified when you first set up the watch.
Heart Rate Features
The D2 Air X10 watch 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 glance. If both wrist-based heart rate and chest
heart rate data are available when you start an activity,
your watch uses the chest heart rate data.
Wrist-based Heart Rate
Wearing the Watch
CAUTION
Some users may experience skin irritation after prolonged
use of the watch, especially if the user has sensitive skin
or allergies. If you notice any skin irritation, remove the
watch and give your skin time to heal. To help prevent skin
irritation, ensure the watch is clean and dry, and do not
overtighten the watch on your wrist. For more information,
go to
• 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: The optical sensor is located on the back of the
watch.
• See
Tips for Erratic Heart Rate Data, page 12
for more
information about wrist-based heart rate.
• See
Tips for Erratic Pulse Oximeter Data, page 15
for
more information about the pulse oximeter sensor.
• For more information about accuracy, go to
• For more information about watch 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 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.
• While exercising, use a silicone band.
Viewing Heart Rate Information
1 From the watch face, swipe up or down to view the
heart rate glance.
The heart rate glance displays your current heart rate in
beats per minute (bpm).
2 Select the glance to view a graph of your heart rate
since midnight.
The graph shows your recent heart rate activity, high
and low heart rate, and color-coded bars to indicate the
time spent in each heart rate zone (
).
3 Swipe up to view your resting heart rate (RHR) values
for the last 7 days.
Setting an Abnormal Heart Rate Alert
CAUTION
This feature only alerts you when your heart rate exceeds
or drops below a certain number of beats per minute,
as selected by the user, after a period of inactivity.
This feature does not notify you of any potential heart
condition and is not intended to treat or diagnose any
medical condition or disease. Always defer to your health
care provider for any heart-related issues.
1 Hold .
2 Select > Wrist Heart Rate > Abnormal Heart Rate
Alerts.
3 Select High Alert or Low Alert.
12
Heart Rate Features
