All the great features of the Insight HD memory cards minus shaded relief overlay make them compatible with Lowrance Elite™ and Mark™ fish finder/chartplotters in both the 4" and 5" models. Delivers the best-quality, most-up-to-date lake and waterway maps, including shoreline detail, depth contours, navigation aids and other points of interest. Lake Insight edition provides high-resolution depth contours of 1-3 feet for 3,500 lakes in Illinois, Iowa, North and South Dakota, Nebraska, Michigan, Wisconsin and Minnesota, including border lakes Rainy Lake and Lake of the Woods. Also includes enhanced shoreline detail and depth contours on more than 5,000 lakes. Ample memory space allows anglers to store log, screen shots and waypoints to put all the information you need to be successful in one place - on your Lowrance sonar unit. Also compatible with HDS and HDS Gen2 models.