Humminbird 600034-1 SmartStrike Dakotas/Nebraska Map Card Humminbird SmartStrike takes you straight to the action by showing you where the fish are biting at any given moment Search parameters like fish species, season, time of day, and weather conditions, the SmartStrike engine searches depth ranges, type of structure, proximity, and more Build a custom search based on criteria you choose Enjoy all LakeMaster features SmartStrike full search functionality is exclusive to High-Definition waters only and Humminbird ONIX/ION units