Suunto TRAVERSE series User Manual page 27

3.7.1 Calibrating compass
If you have not used the compass before, you must first calibrate it.
Turn and tilt the watch in multiple directions until the watch beeps,
indicating calibration is complete.
If you have already calibrated the compass and want to re-calibrate it,
you can access the calibration option in the options menu.
If the calibration is successful, the text CALIBRATION SUCCESSFUL is
displayed. If the calibration does not succeed, the text CALIBRATION
FAILED is displayed. To retry the calibration, press [Start] .
To manually start compass calibration:
1. Keep [Next] pressed to enter the options menu.
[Light] and select with [Next].
2. Scroll to NAVIGATION with
3. Scroll to Settings with [Light] and select with [Next].
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