The nav on my AVN2454 is run off a dvd nav disc, which makes for easy upgrades. It does indeed give lat/long coordiantes and you can even set a destination using lat/long coordiantes if you know them. It is very handy to have the nav in the truck. I travel a couple times a year and it's nice to be able to type in "Wal-Mart" and find the closest 20 Wal-Marts to wherever I am, along with their phone number to call and see if something is in stock. The only minor complaint i have is no fault of the eclipse headunit, i think it's common to all nav systems......is that the Point-Of-Interest icons are sometimes off the mark from where they should be. But this is very minor to me.