Worldwide basemap 2.2" 65K color, sunlight-readable display 3-axis compass and barometric altimeter Wireless capability to share waypoints, routes and geocaches with other similar devices GPS and GLONASS satellites for faster positioning 2 New AA Batteries included. As well as cable to connect to computer. You can also purchase rechargeable batteries for it. Connect to the computer and upload gpx/map routes. Barely used - some maps are uploaded, but never actually used it on a hike.