COROS devices rely on a combination of data collected via GPS, as well as the unit's internal barometer to calculate elevation. The barometer converts air pressure readings to elevation readings, and this data is periodically assessed and recalibrated via GPS.
During workouts, the barometer takes a new reading once every 1-2 seconds and then the GPS system calibrates the elevation once every 30 minutes. During daily usage, the barometer reading time is increased to once a minute, and the data displayed in the watch elevation widget will be refreshed once every ten minutes.
What Factors Could Impact Elevation Readings?
It's important to note that calibrating elevation cannot guarantee 100% accuracy, as there are multiple factors that can affect the barometer readings. To learn more, please click here to visit our article which details how to ensure accurate elevation data collection.
Likewise, GPS data provides a range of accuracy depending on the strength of the given signal at that time. When the device has a strong satellite signal, the readings can be accurate within only a few meters. However, when the device has a weak satellite signal it can be accurate to tens of meters.
To ensure the best results, we recommend entering your exact elevation prior to the start of an activity by following the instructions below:
COROS Watches:
- Main watch face → System → Sensors → Calibration → Elevation → Use GPS | Enter Elevation.
- Make sure to stand in an open field when calibrating the elevation using GPS for the best accuracy.
COROS DURA:
- Main menu → System → More Settings → Calibration → Elevation → Use GPS | Enter Elevation.
- Make sure to stand in an open field when calibrating the elevation using GPS for the best accuracy.
Interpreting Elevation Data on Your Device and Within the COROS App
If you notice a discrepancy between your device's elevation readings and the elevation readings within the COROS app or Training Hub, this is likely due to the GPS calibration. By default, the elevation data saved on your COROS device was collected by the internal barometer. However, if there is a large enough difference between the data collected by the unit's barometer and that collected by GPS, the GPS may override the barometer to ensure the most accuracy, which is what you see reflected in the app and Training Hub.
Contact COROS Support
Need help or have additional questions? Reach out to a COROS Expert in one of the following ways:
- Submit a Support Request Form – Click here to get started
- Send a message via the COROS App:
- Open the COROS App
- Go to Profile Page > Customer Support > Contact Support > Submit.