20-CHANNEL, WAAS-ENABLED SIRF GPS RECEIVER;HANDHELD;LARGE, FULL-COLOR LCD SCREEN;320 X 240 DISPLAY SIZE;RUGGED, RUBBER ARMOR;WATERPROOF TO IPX7;SUNLIGHT-READABLE LCD SCREEN;DOWNLOADS DISPLAYS & GEOREFERENCES;SATELLITE PHOTOGRAPHY; SCREEN LAYERING;SAFETRACK BATTERY CONSERVATION MODE;HOT BUTTON OPERATION;STORES UP TO 500 WAYPOINTS, 20 ROUTES & 20 TRAILS;STORES UP TO 15 SATELLITE IMAGES, AERIAL PHOTOS OR TOPOGRAPHIC MAPS;AUDIBLE ALARMS;BASE ROAD MAP OF NORTH AMERICA WITH POINTS OF INTEREST;128 MB OF SD-RAM;32 MB BUILT-IN USER MEMORY;NIGHT MODE SCREEN VIEWING;DOWNLOAD TOPOGRAPHICAL MAPS AT WWW.BUSHNELLGPS.COM WITH 4 FREE DOWNLOADS INCLUDED WITH PURCHASE;USB PORT INCLUDES CABLE;DIM: 108"H X 44"W X 18"D;REQUIRES 2 AA BATTERIES