SUUNTO LUMI - Manual (Page 37)

shown in the center. When in the empty view, you will only see the cardinal
point. When in the heading view, you will see the numerical degree value of
your heading.
Remember to keep your compass level, and keep away from metal (for example,
jewelry) and magnetic fields (for example, power lines) to get correct readings.
NOTE: The compass will switch itself to power saving mode after a minute.
You can reactivate it by pressing [Start Stop].
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