Navionics+ Regions is a powerful electronic chart solution providing exceptional regional marine and lakes content. Get detailed Nautical Chart, SonarChart1 ft HD bathymetry map, and Community Editsplus daily updates for one year! Includesmore than 7,500 lakes in IA, MI, MN, ND, SD and WI, plus all of Lake of the Woods, Rainy Lake and US waters of the regions Great Lakes. Nautical Chart and SonarChart are preloaded. Simply plug your card into your PC/Mac to download the most updated charts and Community Edits anywhere within the entire region. 16 GB card and USB reader included.