The palm-sized Dakota 20 makes outdoor navigation effortless with a tough, sunlight-readable touch screen display. The interface is easy to use, so youll spend more time enjoying the outdoors & less time searching for information. The Dakota 20 comes with built-in worldwide basemap, barometric altimeter & 3-axis electronic compass so that you can navigate anywhere with ease. An 850MB internal memory means that you can download Garmin Mapsource data onto the unit from your computer or you can use the micro SD card slot for plug & play convenience.