Using Do Not Disturb Mode
Before you can use do not disturb mode, you must pair your device with a smartphone (Pairing Your Smartphone).
You can use do not disturb mode to turn off the backlight, alert tones, and vibrations. For example, you can use this mode while sleeping or watching a movie.
NOTE:
You can set your normal sleep hours in the user settings on your
Garmin Connect™ account. The device automatically enters do not disturb mode during your normal sleep hours.
From the time of day screen, swipe right to view the controls widget, and select 
.
.
You can turn off do not disturb mode from the controls widget.