Garmin Montana 600t Handheld GPS, Camo Bold 4" sunlight-readable touchscreen display with dual-orientation Preloaded TOPO U.S. 100K maps Built-in 3 axis tilt-compensated electronic compass that shows where youre heading even when youre standing still microSD card slot to load additional maps, such as BlueChart g2, City Navigator NT , or TOPO 24K (microSD card sold separately). Also supports BirdsEye Satellite Imagery, Garmin Custom Maps, and geocaching Share your waypoints, tracks, routes and geocaches wirelessly with other compatible Garmin GPS users. Plus, use BaseCamp software for viewing and organizing your data