Holux GPSmile NAV iSlim Product User Manual page 35

2. Select [ Volume & Light ] from the main screen to access the
settings screen.
a. Control the volume directly with the "speaker" icon. There are nine levels
of volume.
Select the "MUTING" icon to mute the Volume.
b. Control the LCD Brightness with "light bulb" icon. There are nine levels of
brightness.
GPSmile61
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