SmartStrike; - Great Lakes 2018 - Version 3.0The Humminbird SmartStrike; Great Lakes 2018, Version 3.0 Map Card combines many of the best fishing lakes within Michigan, Indiana, Ohio and the Great Lakes (Lake Michigan, Superior, Huron, Erie and Ontario) - all on one map card.  Conduct searches for the best fishing locations with the SmartStrike; Map Card.  It's like having your own personal fishing guide with with decades of experience.SmartStrike; 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, HELIX, and the ONIX/ION units. The difference is that when a SmartStrike; card is used in an ONIX/ION or HELIX 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.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 SmartStrike; search and millions of data points are searched to return areas based on the criteria you choose. No more guessing, fruitless searching, or wasted casts. Just fishing.SmartStrike; also gives anglers access to other great mapping features.Additional Map Features:Shallow water highlightDepth highlightWater level offsetFollow the contour with iPilot; Link™ equipped Minn Kota trolling motorWARNING: 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.