Maximize every moment of fishing when you upgrade to the unrivaled accuracy and detail of Humminbird LakeMaster mapping, which features easy-to-read contours, highlighted depth ranges, and scrollable lake lists. LakeMaster digital maps provide the most detailed, high-definition collection of freshwater mapping in the United States, with unmatched depth contours between 1-3 feet (in high definition) or 3-5 feet (standard definition). This Great Plains Edition, Version 6 boasts more than 400 high-definition lakes and over 500 total lakes from NE, KS, MO, IA, and IL, with 160 new or updated lakes since the prior version. Version 6 includes Banner Lake, Bull Shoals Lake, Cedar Lake, East Loon Lake, El Dorado Lake, Illinois River Pools , Keith Sebelius Lake, Lake of the Ozarks, McCanaughy, Mississippi River Pools, and more. Easy-to-see shading highlights shallow-water areas within an adjustable range up to 30 feet, and depth contours and shorelines can be synchronized with the actual water levels of lakes, reservoirs, and rivers. LakeMaster digital maps can be used with Minn Kota i-Pilot Link (sold separately), allowing you to follow a selected depth contour line to deliver precise, automatic boat control. Collected by Humminbird's own team of GIS analyst cartographers, LakeMaster high-definition maps are created from on-the-water surveys using hundreds of thousands of depth soundings, plus state-of-the-art GPS and sonar technologies. LakeMaster digital maps come on a Micro SD card (with included SD card adapter) that's compatible with all GPS-equipped HELIX, SOLIX, ONIX, and ION Series models and select 600-1100 Series models. Strictly intended for use in your Humminbird GPS unit, LakeMaster mapping cards are not PC compatible and map files could be corrupted if accessed on a computer.LakeMaster digital maps come on a Micro SD card (with included SD card adapter) that's compatible with all GPS-equipped HELIX, SOLIX, ONIX, and ION Series models and select 600-1100 Series models. LakeMaster digital maps can be used with Minn Kota i-Pilot Link (sold separately), allowing you to follow a selected depth contour line to deliver precise, automatic boat control. Easy-to-see shading highlights shallow-water areas within an adjustable range up to 30 feet, and depth contours and shorelines can be synchronized with the actual water levels of lakes, reservoirs, and rivers. This Great Plains Edition, Version 6 boasts more than 400 high-definition lakes and over 500 total lakes from NE, KS, MO, IA, and IL, with 160 new or updated lakes since the prior version. Maximize every moment of fishing when you upgrade to the unrivaled accuracy and detail of Humminbird LakeMaster mapping, which features easy-to-read contours, highlighted depth ranges, and scrollable lake lists.Item Dimensions LxWxH: 8 x 6 x 1 inches. Item Weight: 0.34 Pounds. Screen Size: 15 Inches. Power Source: AC/DC. Series: LakeMaster. Brand: Humminbird. Best Sellers Rank: #20,156 in Electronics. Customer Reviews: 4.7 out of 5 stars 99 ratings 4.7 out of 5 stars. Date First Available: ?January 10, 2016. Is Discontinued By Manufacturer: ?No. : ?B01B62BGFS. Manufacturer: ?Humminbird. Department: ?Mens. Power Source: ?AC/DC. Color: ?Black. Item Dimensions LxWxH: ?8 x 6 x 1 inches. Product Dimensions: ?8 x 6 x 1 inches. Item Weight: ?5.5 ounces. Item model number: ?600017-5. Series: ?LakeMaster. Brand: ?Humminbird. Standing screen display size: ?15 Inches.