Magellan Explorist 310 Angler Edition GPS Receiver: * Premium world wide base map 1:24K * Button navigation * Vibrant sunlight readable color display * 10K paperless geocache capacity * Active suspend mode * Preloaded with world edition map * Sirfstariii GPS chipset provides accuracy of 10"-15" * Requires 2 x AA batteries * Coverage includes over 4,000 lakes and waterways with detailed shorelines and depth contours * Provides anglers everything they need to know about a lake"s physical and biological make-up and fishery for more successful fishing