Compatible With Garmin GPS Navigation Systems/ Chart Plotters; Detailed Coverage Of U.S Coasts, Lakes, Rivers And Inland Waterways, Alaska, Hawaii And Canada Coverage Of Coastal British Columbia, The Great Lakes, The St. Lawrence Seaway, New Brunswick, Nova Scotia; Region Code: BUS001L; On SD/Micro-SD Card; With Auto Guidance Technology, Daily Chart Updates, Depth Range Shading, Shallow Water Shading, Raster Cartography