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The elevation scale.
A graph of your average oxygen saturation readings for the last 24 hours.
Your most recent oxygen saturation reading.
The oxygen saturation percentage scale.
A graph of your elevation readings for the last 24 hours.
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.
3 Press START, and select Take Reading to begin a pulse oximeter reading.
4 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.
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.
• Remain motionless while the watch reads your blood oxygen saturation.
• Wear the watch above your wrist bone. The watch should be snug but comfortable.
• Hold the arm wearing the watch at heart level while the watch reads your blood oxygen saturation.
• Use a silicone or nylon band.
• Clean and dry your arm before putting on the watch.
• Avoid wearing sunscreen, lotion, and insect repellent under the watch.
• Avoid scratching the optical sensor on the back of the watch.
• Rinse the watch with fresh water after each workout.
Heart Rate Features 55
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