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Starting a Flight

  1. From the watch face, press Upper-right button.
  2. Select Activities > Aviation > Fly.
  3. Wait while the watch locates satellites.
  4. Press Upper-right button to start the activity timer.
  5. Hold Middle-left button, and select Flight Timer to start a flight timer that is separate from the activity timer (optional).
    The flight timer data screen appears in the data screen loop.
  6. If necessary, press Upper-right button, select Nearest Airports, and select a location to view the weather, map, or navigate to the location.
  7. After you complete your activity, press Upper-right button, and select Stop Fly > Save.

Setting Aviation Alerts

  1. From the watch face, press Upper-right button.
  2. Select Activities > Aviation > Fly > In-flight Alerts.
  3. Select an option:

    • To receive an alert at a specified altitude, select Altitude Alert.

    • To receive an oxygen level alert at a specified cabin altitude, select O2 Alert.

    • To receive a reminder to check the fuel tank after a specified time, select Fuel Tank Reminder.

    • To receive an alert when you deviate from your course by a specified distance, select Cross Track Alert.

    • To receive an alert when you reach a waypoint, select Appr. Waypoint.

    NOTE: You can prevent all aviation alerts from appearing during a flight by selecting Inhibit All.
  4. If necessary, select Active to turn on the alert.
  5. If necessary, enter a value for the alert.
  6. Select Vibe to enable vibration for the alert.

Setting the Barometric Pressure Manually

You can set the current barometric pressure manually to help improve the accuracy of the pressure altitude reading.

  1. From the watch face, press Upper-right button.
  2. Select Activities > Aviation > Fly.
  3. Select the activity settings.
  4. Select Altimeter Settings > Barometer > Manual.
  5. Select an option:

    • To use the standard barometric pressure at sea level, select Set to STD.

    • To use the barometric pressure at your current elevation, select Sync to Elevation.

    • To use the current local barometric pressure from your watch, select Sync to Device.

Horizontal Situation Indicator

WARNING

This watch is not intended to provide primary flight information and is to be used for supplemental purposes only.


Horizontal situation indicator data with callouts

1

Destination airport identifier and distance.

2

Estimated time en route (ETE).

3

To-and-from indicator. Indicates whether you are headed toward or away from the waypoint.

4

Cross-track distance.

5

Course deviation indicator (CDI). Indicates the location of the desired course line in relation to your location.

6

Course deviation distance. The dots indicate your distance off course. The maximum of two dots equals 2.5 nautical miles.

Viewing Your SpO2 Readings in Flight

WARNING

The SpO2 readings are intended for supplemental information only. Always defer to applicable flight instruments for primary awareness.

The watch 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. During a flight, the watch automatically takes pulse oximeter readings more frequently, so you can monitor your SpO2 percentage.

TIP: You can improve the accuracy of your SpO2 readings by turning on the All Day pulse oximeter mode (Setting the Pulse Oximeter Mode).
  1. Start a Fly activity.

    Your most recent reading appears as an oxygen saturation percentage and position on the color gauge.

    NOTE: If you are too active for the watch to determine your oxygen saturation, dashes appear instead of a percentage. You should remain stationary for up to 30 seconds while the watch reads your blood oxygen saturation.
  2. If necessary, scroll up or down to view the pilot health data screen with hourly pulse oximeter trends.

Viewing the NEXRAD Weather Radar Map

When you pair your watch with your phone, you can view the NEXRAD weather radar map and nearest aviation waypoints for your current location.

  1. Customize a button or button combination for the WX Radar feature (Customizing the Button Shortcuts).
  2. Hold the button or button combination you customized to view the WX Radar map.
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June 2026
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