GARMIN U.S., COASTAL CANADA BUILT-IN CHAR 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 Shad