Humminbird 587ci HD Waterproof Marine GPS and Chartplotter with Sounder

The Humminbird 587ci HD Combo features a high resolution 640V x 480H 4.5-Inch color display, Dual Beam PLUS sonar with 300 Watts RMS power output, and 50 channel internal GPS Chartplotting with built-in UniMap. The UniMap covers the contiguous U.S.A. coastline and inland lakes and rivers at 30 meters per pixel resolution. On the coast, this clearly shows features as small as canals, and many coastal navigation lights. Inland, the UniMap features virtually all recreational lakes and rivers, plus hundreds of thousands of small lakes that don’t appear on other charts. In other words, your lake is likely to be there! With the UniMap, you have a chart virtually anywhere you travel in the United States. Features include SD card slot, Freeze Frame, Real Time Sonar window, inst more »