Suunto 9 Baro - compass calibration before every run?

[Dimitrios Kanellopoulos]

Hi every time you connect the watch to the magnetic charger the watch needs a compass calibration due to the strong magnetic field of the charger.

Compass should be asked to be calibrated when it has an error. The preivous user of this thread had magnetic gloves.

Do you happen to have some magnetic interference in your area?

IF the calibration is asked once per run that is normal.

[Fiox89]

@Dimitrios-Kanellopoulos Well then it may be the charging process, I have no gloves or other possible magnetic interference. I will try to observe if this happens after charging the watch then. Thanks for the advice

[Dimitrios Kanellopoulos]

@Fiox89 come back here if you still experience issues.
In general, you can calibrate a compass, even if the watch does not ask it (applies also to mobiles eg google maps etc) by doing manually that 8 figure gesture.

Digital compasses can understand most of the times if they are uncalibrated when a big electromagnetic change happens eg the magnetic charger that the Spartans have.

I hope it clears up a bit.