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66 GPSMAP 620 and GPSMAP 640 Owner’s Manual
Automotive Mode: Advanced Conguration
Brightness—adjust the backlight brightness level. Reducing the
backlight brightness increases your battery life.
TIP: You can also adjust the brightness level from any screen by
pressing and quickly releasing
.
Restore—restore the original display settings.
Adjusting the Volume
From the Menu page, touch Volume. Touch and to adjust the
volume. Touch the box next to Mute to mute all audio.
Adjusting the Backlight
1. From any screen, press and quickly release .
2. Touch and to adjust the backlight.
Updating the Time Settings
Touch Tools > Settings > Time.
Time Format—select a 12-hour, 24-hour, or UTC time format.
Current Time—manually set the time on your device. Select
Automatic to have the GPSMAP 620 or GPSMAP 640 set the time
based on your location.
Restore—restore the original time settings.
Setting the Languages
Touch Tools > Settings > Language.
Voice—change the language for voice prompts.
Text—change all on-screen text to the selected language. Changing
the text language does not change the language of user-entered data
or map data, such as street names.
Keyboard—select the keyboard for your language. You can
also change the keyboard language mode from any keyboard by
touching the Mode button.
Restore—restore the original language settings.