3PLUS Callie Owner's Manual page 21

Quick Settings
Brightness
Adjust the brightness of the watch by tapping the icon and
selecting the desired level of screen brightness.
Airplane Mode
Airplane mode turns off all Bluetooth connectivity to your
mobile device. When the icon is grey, this feature is OFF.
When the icon is white, this feature is ON.
Do not Disturb Mode (DND)
DND mode mutes all notifications and vibrations on your
watch. When the icon is grey, this feature is OFF. When
the icon is white, this feature is ON.
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