Operation Manual
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 19 for more
information about the pulse oximeter sensor.
• For more information about accuracy, go to garmin.com
/ataccuracy.
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.
Viewing the Heart Rate Widget
The widget displays your current heart rate in beats per minute
(bpm) and a graph of your heart rate for the last 4 hours.
1
From the watch face, select DOWN.
2
Select to view your average resting heart rate values for
the last 7 days.
Broadcasting Heart Rate Data to Garmin Devices
You can broadcast your heart rate data from your D2 Delta/
Delta S/Delta PX device and view it on paired Garmin devices.
NOTE: Broadcasting heart rate data decreases battery life.
1
From the heart rate widget, hold MENU.
2
Select Options > Broadcast Heart Rate.
The D2 Delta/Delta S/Delta PX device starts broadcasting
your heart rate data, and appears.
NOTE: You can view only the heart rate widget while
broadcasting heart rate data from the heart rate widget.
3
Pair your D2 Delta/Delta S/Delta PX device with your Garmin
ANT+ compatible device.
NOTE: The pairing instructions differ for each Garmin
compatible device. See your owner's manual.
TIP: To stop broadcasting your heart rate data, select any
key, and select Yes.
Broadcasting Heart Rate Data During an Activity
You can set up your D2 Delta/Delta S/Delta PX device to
broadcast your heart rate data automatically when you begin an
activity. For example, you can broadcast your heart rate data to
an Edge
®
device while cycling, or to a VIRB
®
action camera
during an activity.
NOTE: Broadcasting heart rate data decreases battery life.
1
From the heart rate widget, hold MENU.
2
Select Options > Broadcast During Activity.
3
Begin an activity (Starting an Activity, page 4).
The D2 Delta/Delta S/Delta PX device starts broadcasting
your heart rate data in the background.
NOTE: There is no indication that the device is broadcasting
your heart rate data during an activity.
4
If necessary, pair your D2 Delta/Delta S/Delta PX device with
your Garmin ANT+ compatible device.
NOTE: The pairing instructions differ for each Garmin
compatible device. See your owner's manual.
TIP: To stop broadcasting your heart rate data, stop the
activity (Stopping an Activity, page 4).
Turning Off the Wrist-based Heart Rate Monitor
The default value for the Wrist Heart Rate setting is Auto. The
device automatically uses the wrist-based heart rate monitor
unless you pair an ANT+ heart rate monitor to the device.
NOTE: Disabling the wrist-based heart rate monitor also
disables the on-wrist detection feature for Garmin Pay
payments, and you must enter a passcode before making each
payment (Garmin Pay, page 10).
NOTE: Disabling the wrist-based heart rate monitor also
disables the wrist-based pulse oximeter sensor.
1
From the heart rate widget, hold MENU.
2
Select Options > Status > Off.
Putting On the Heart Rate Monitor
You should wear the heart rate monitor directly on your skin, just
below your sternum. It should be snug enough to stay in place
during your activity.
1
If necessary, attach the strap extender to the heart rate
monitor.
2
Wet the electrodes
À
on the back of the heart rate monitor to
create a strong connection between your chest and the
transmitter.
3
Wear the heart rate monitor with the Garmin logo facing right-
side up.
The loop
Á
and hook
Â
connection should be on your right
side.
4
Wrap the heart rate monitor around your chest, and connect
the strap hook to the loop.
NOTE: Make sure the care tag does not fold over.
After you put on the heart rate monitor, it is active and sending
data.
Tips for Erratic Heart Rate Data
If the heart rate data is erratic or does not appear, you can try
these tips.
Heart Rate Features 13