Humminbird SmartStrike is your digital fishing guide, letting you predict where the fish will be next. SmartStrike combines High Definition LakeMaster lake map data and extensive search algorithms to help you pattern and locate fish at any time of the year. Based on search parameters like season, time of day, temperature and targeted fish species, SmartStrike highlights areas where your prey is most likely to be located-before you even wet a line. Species Search lets you locate fishing hot spots where your preferred species is likely to be active based on current conditions. Use Advanced Search options to highlight areas on the lake map that meet specific criteria for depth, slope and other parameters. No more guessing. No more folding paper maps. Just a direct shot straight to the action. SmartStrike search functionality is only available on the High Definition maps. Compatible with all SOLIX Series models, all HELIX 12, 10 and 9 models, and any GPS-equipped HELIX 7 G2N/G2 and HELIX 5 G2 models. Looking for your lake? Note: Opened packages are not eligible for return, so it's better to be equipped with knowledge to avoid any hassles. Humminbird has map coverage for lakes, rivers, and reservoirs in 11 Editions and Regions spanning across the U.S. and parts of North West Ontario. For a complete lake list for each card, visit https://www.humminbird.com/support/Find-A-Lake Find your area below. Dakotas/Nebraska, V1: Mfg. Number: 600034-1 Has over 100 High Definition waters, and 345 total lakes in ND, SD and NB. Includes highly requested water bodies like: Angostura Reservoir, Bellfourche Reservoir, Devils Lake, Francis Case, Jamestown Reservoir, Lewis and Clark, Oahe, Sakakawea, Sharpe, and Waubay Lake. Great Lakes, V3: Mfg. Number: 600035-3 Has added over 140 lakes since the prior version (50 in HD). Boasts more than 380 lake maps in HD, and over 1,540 total lakes from MI, IN and OH. Update