Getting Pulse Oximeter Readings; Turning On Pulse Oximeter Sleep Tracking; Turning On All-Day Mode; Tips For Erratic Pulse Oximeter Data - Garmin FORERUNNER 255 Series Owner's Manual

Getting Pulse Oximeter Readings

You can manually begin a pulse oximeter reading by
viewing the pulse oximeter glance. The glance displays
your most recent blood oxygen saturation percentage,
a graph of your hourly average readings for the last
24 hours, and a graph of your elevation for the last 24
hours.
NOTE: The first time you view the pulse oximeter
glance, the watch must acquire satellite signals to
determine your elevation. You should go outside, and
wait while the watch locates satellites.
1 While you are sitting or inactive, press UP or DOWN
to view the pulse oximeter glance.
2 Press START to view glance details and begin a
pulse oximeter reading.
3 Remain motionless for up to 30 seconds.
NOTE: If you are too active for the watch to get a
pulse oximeter reading, a message appears instead
of a percentage. You can check again after several
minutes of inactivity. For best results, hold the arm
wearing the watch at heart level while the watch
reads your blood oxygen saturation.
4 Press DOWN to view a graph of your pulse oximeter
readings for the last seven days.

Turning On Pulse Oximeter Sleep Tracking

You can set your device to continuously measure your
blood oxygen saturation while you sleep.
NOTE: Unusual sleep positions can cause abnormally
low sleep-time SpO2 readings.
1 From the pulse oximeter glance, hold UP.
2 Select Pulse Ox Options > During Sleep.

Turning On All-Day Mode

1 From the pulse oximeter glance, hold UP.
2 Select Pulse Ox Options > All Day.
The device automatically analyzes your oxygen
saturation throughout the day, when you are not
moving.
NOTE: Turning on all-day mode decreases battery
life.

Tips for Erratic Pulse Oximeter Data

If the pulse oximeter data is erratic or does not appear,
you can try these tips.
y Remain motionless while the watch reads your
blood oxygen saturation.
y Wear the watch above your wrist bone. The watch
should be snug but comfortable.
y Hold the arm wearing the watch at heart level while
the watch reads your blood oxygen saturation.
y Use a silicone or nylon band.
y Clean and dry your arm before putting on the watch.
y Avoid wearing sunscreen, lotion, and insect
repellent under the watch.
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y Avoid scratching the optical sensor on the back of
the watch.
y Rinse the watch with fresh water after each
workout.

Navigation

You can use the GPS navigation features on your device
to view your path on a map, save locations, and find
your way home.

Courses

You can send a course from your Garmin Connect
account to your device. After it is saved to your device,
you can navigate the course on your device.
You can follow a saved course simply because it is a
good route. For example, you can save and follow a
bike friendly commute to work.
You can also follow a saved course, trying to match or
exceed previously set performance goals. For example,
if the original course was completed in 30 minutes, you
can race against a Virtual Partner trying to complete
the course in under 30 minutes.

Following a Course on Your Device

1 From the watch face, select START.
2 Select an activity.
3 Hold UP.
4 Select Navigation > Courses.
5 Select a course.
6 Select Do Course.
Navigation information appears.
7 Select START to begin navigation.

Creating a Course on Garmin Connect

Before you can create a course on the Garmin Connect
app, you must have a Garmin Connect account
Connect, page 39).
1 From the Garmin Connect app, select
2 Select Training > Courses > Create Course.
3 Select a course type.
4 Follow the on-screen instructions.
5 Select Done.
NOTE: You can send this course to your device
(Sending a Course to Your Device, page

Sending a Course to Your Device

You can send a course you created using the Garmin
Connect app to your device
Garmin Connect, page 28).
1 From the Garmin Connect app, select
2 Select Training > Courses.
3 Select a course.
4 Select > Send to Device.
(Garmin
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28).
(Creating a Course on
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Navigation