The Oregon features an easy-to-use, touchscreen interface with 5 different user profiles: automotive, marine, recreation, fitness and geocache.  The Oregon includes a built-in basemap, color screen, high-sensitivity receiver, SD card slot, color display, waterproof case and more.  Store up to 50 routes, 1000 waypoints and 20 tracks.  450 and 450t (T adds built in topo maps) feature a 3-axis tilt-compensated electronic compass,  barometric altimeter, shaded relief basemap, electronic compass, barometric altimeter, wireless exchange of user routes, tracks, waypoints and geocaches.  550 and 550t (T adds topo and street level maps) include a built-in 3.2 megapixel camera and 850 MB of internal memory for map data and photos.  Weight: 6.8 oz with batteries (not included). / BATTERY LIFE: 15 hrs on Lithium / DISPLAY: 1.53" W x 2.55" H (240 x 400 pixels)