Nikon AW120 - Manual (Page 171)

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Smile Timer
The camera detects human faces and then automatically releases the shutter
whenever a smile is detected.
B
Notes About Smile Timer
The setting may not be changed when using certain settings of other functions.
Select smart portrait mode M d button M F menu icon M Smile
timer M k button
Option Description
a On
(default setting) Whenever a smile is detected, the camera
automatically releases the shutter.
Off Turns the smile timer off.