Suunto CORE - Activating button lock

To choose a language:
1. In GENERAL, select LANGUAGE.
2. Select a language from the list with [+] and [- Light].
5.3.5 Activating button lock
You can activate and deactivate the button lock by keeping [-Light] pressed
down. When the button lock is activated, it is indicated with a lock symbol .
NOTE: You can change views and use the backlight when the button lock is
activated.
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