The rugged, waterproof touch screen simplifies navigation with its one-touch user interface. No hard-to-see buttons or cursors. By shedding traditional controls, the Oregon series is extremely lightweight and simple to use. New user-friendly programming also means you don't need to be a topography expert to find your way. Digital Elevation Mapping shades map elevations, allowing users to easily pick out a real-world point-of-reference based on the altitudinal differences depicted on screen. The built-in Routable DEM basemap navigates you around the world. High-resolution 400x240-pixel display generates detailed map images. Wirelessly exchange routes, tracks, waypoints, geocaches and images with other GPS units. Fix your position quickly with the pinpoint accuracy of the high-sensitivity GPS receiver. Stores 1,000 waypoints, 50 routes and 10,000 track logs. Expand the unit's memory with a removable micro SD card. Image viewer displays pictures from your micro SD card. Download new data from your computer easily using the included USB cable. Runs for 18 hours on two AA batteries (NiMH or lithium batteries recommended). This unit can store your favorite maps with 850MB of internal memory and generates 3-D map. It even monitors weather conditions with the barometric altimeter.