Nikon Coolpix S33 Reference Manual page 57

3
Press flexible button 4
(O).
The sound is set.
C
Muting All Sounds
On the screen displayed in step 1, press flexible button 4 (u Turn sounds on or off)
M flexible button 3 (z Turn sounds off), in that order, to mute all sounds.
To cancel the mute, press flexible button 4 (u Turn sounds on or off) M flexible
button 2 (u Turn sounds on), in that order.
Pick a shutter sound
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