SmartStrike - Great PlainsSmartStrike is a family of map cards that parallels the standard Humminbird LakeMaster editions. Coverage area and lake lists remain the same and both are compatible with Humminbird legacy models and the ONIX/ION units. The difference is that when a SmartStrike card is used in an ONIX/ION unit, it has the special capability of using the Contour Elite search functions on (and only on) any of the High Definition lake maps for that card. It's like looking into a digital crystal ball.The Humminbird SmartStrike takes you straight to the action by showing you where the fish are biting at any given moment. Based on search parameters like fish species, season, time of day, and weather conditions, the SmartStrike engine searches depth ranges, type of structure, proximity, and more to highlight areas on High Definition* lake maps where your prey is most likely to be located- before you even wet a line. Build a custom search based on criteria you choose, or click any location on a lake, select Find Similar Areas, and millions of data points are searched to return other areas like it. No more guessing, fruitless searching, or wasted casts. Just fishing.SmartStrike also brings the groundbreaking technology of Follow the Contour to your fingertips. When combined with a compatible i-PilotA(R) Link(TM) system, your map card allows your boat to automatically follow a path directly on or offset from any contour, so you can focus on fishing.With the SmartStrike map card you enjoy all of the LakeMaster features including the following:i-PilotA(R) Link(TM) compatibleEasy to read contoursDepth Highlight Range Water Level Offset Shallow Water Highlight Scrollable Lake ListCoverage and CompatibilityThe Humminbird SmartStrike Great Plains Edition, Version 2 Map Card combines many of the best fishing waters for Iowa, Illinois, Kansas, Missouri, and Nebraska all on one map card View all the lakes and elevations: Download the product lake list*SmartStrike full search functionality is exclusive to High-Definition waters only and Humminbird ONIX/ION units.WARNING: This product can expose you to chemicals including Naphthalene which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.