I am not being a s.a. but you need the map of the area that you hunt in. If you buy the unit from a hunting suppy store they will most likely load your sd card of the area for like 10 bucks.
Becareful where the maps come from. I had a buddy who let a buddy load the maps to his and it shut his down. he had to send it back to garmin to get it straightened out. Most of the bigger hunting suppliers probably have good maps. Chip