HIGH-SENSITIVITY, WAAS-ENABLED GPS RECEIVER PROVIDES PEAK PERFORMANCE IN ANY ENVIRONMENT; BUILT-IN BASEMAP INCLUDES LAKES, RIVERS, CITIES, INTERSTATES, NATIONAL & STATE HIGHWAYS, RAILROADS & COASTLINES; FEATURES A 1.7\H X 1.3\"W SCREEN WITH 256-LEVEL COLOR TFT; USB COMPATIBLE FOR HIGH-SPEED MAP DOWNLOADS; 24 MB OF INTERNAL MEMORY ALLOWS USER TO LOAD WAYPOINTS & ROUTES FROM THE INCLUDED MAPSOURCE® TRIP & WAYPOINT MANAGER SOFTWARE; STORES 500 WAYPOINTS & 50 ROUTES; 4-WAY CURSOR FOR SMOOTH