Select to zoom in or zoom out of the map page.

Select to scroll through the main pages in sequence and to return to the home page.

Hold to switch between automotive mode and marine mode.

Select to scroll through the main pages in reverse sequence, revert to the previous value in the data entry field, or cancel a function.

Select to acknowledge messages and select options.

Hold to mark a waypoint.

Select to open the menu for the page.

Press twice to open the main menu.

Hold to turn on and turn off the device.

Select to adjust the backlight and external speaker volume.

Select to find a destination.

Select to open the navigation options.

In marine mode, hold to create a Man Overboard (MOB) and begin navigation to the MOB location.

In automotive mode, hold to open the next turn page and play the voice prompt for the next turn.

Select to scroll, highlight options, and move the cursor.