Getting Pulse Oximeter Readings
You can manually begin a pulse oximeter reading by viewing the pulse oximeter widget. The accuracy of the
pulse oximeter reading can vary based on your blood flow, the device placement on your wrist, and your
stillness.
NOTE: You may need to add the pulse oximeter widget to the widget loop.
1 While you are sitting or inactive, swipe up or down to view the pulse oximeter widget.
2 Hold the arm wearing the device at heart level while the device reads your blood oxygen saturation.
3 Keep still.
The device displays your oxygen saturation as a percentage, and a graph of your pulse oximeter readings
and heart rate values for the last four hours.
Changing the Pulse Oximeter Tracking Mode
You can manually begin a pulse oximeter reading by viewing the pulse oximeter widget.
1 Hold .
2 Select > Wrist Heart Rate > Pulse Ox > Tracking Mode.
3 Select an option:
• To turn on measurements while you are inactive during the day, select All Day.
NOTE: Turning on all-day tracking mode decreases battery life.
• To turn on continuous measurements while you sleep, select During Sleep.
NOTE: Unusual sleep positions can cause abnormally low sleep-time SpO2 readings.
• To turn off automatic measurements, select Off.
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 device reads your blood oxygen saturation.
• Wear the device above your wrist bone. The device should be snug but comfortable.
• Hold the arm wearing the device at heart level while the device reads your blood oxygen saturation.
• Use a silicone band.
• Clean and dry your arm before putting on the device.
• Avoid wearing sunscreen, lotion, and insect repellent under the device.
• Avoid scratching the optical sensor on the back of the device.
• Rinse the device with fresh water after each workout.
Activity Tracking
The activity tracking feature records your daily step count, distance traveled, intensity minutes, floors climbed,
calories burned, and sleep statistics for each recorded day. Your calories burned includes your base
metabolism plus activity calories.
The number of steps taken during the day appears on the steps widget. The step count is updated periodically.
For more information about activity tracking and fitness metric accuracy, go to
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Activity Tracking
