Magellan SporTrak Water Resistant Hiking GPS 12-channel GPS receiver; WAAS enabled for up to 3 meter accuracy 1 MB of built-in memory for additional point of interest downloads Large, easy-to-read display; 9-key keypad for quick access to software features Rugged, waterproof design; Quadifiler Helix antenna for superior tracking in harsh environments Software includes 9 graphic navigation screens, storage for up to 500 waypoints and 20 routes, best fish and game time calculator