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Pulse Oximeter
The MARQ device has a wrist-based pulse oximeter to gauge the saturation of oxygen in your blood (SpO2).
Knowing your oxygen saturation can help you determine how your body is adjusting to high altitudes. As your
altitude increases, the level of oxygen in your blood can decrease. When you view the pulse oximeter widget
while you are not moving, your device analyzes your oxygen saturation and your elevation. The elevation profile
helps indicate how your pulse oximeter readings are changing, relative to your to elevation. During a flight, the
device automatically takes pulse oximeter readings more frequently, so you can monitor your SpO2 percentage
(Viewing Your SpO2 Readings in Flight, page 6).
On the device, your pulse oximeter reading appears as an oxygen saturation percentage and color on the graph.
On your Garmin Connect account, you can view additional details about your pulse oximeter readings, including
trends over multiple days.
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 widget. The widget 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 widget, the device must acquire satellite signals to determine
your elevation. You should go outside, and wait while the device locates satellites.
1 While you are sitting or inactive, press UP or DOWN to view the pulse oximeter widget.
2 Press START to view widget 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 device at heart level while the device reads your blood oxygen saturation.
4 Press DOWN to view a graph of your pulse oximeter readings for the last seven days.
Pulse Oximeter 55
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