Humminbird 597ci Combo 4.5-Inch Waterproof Marine GPS and Chartplotter with Sounder Trackplotting and Chartplotting 640 Vertical Pixels Dual beam sonar 1,000 ft depth capability Tilt and Swivel Quick Disconnect Mount Outstanding performance and incredible value come together in the Humminbird 500 Series, with models to meet any angler’s needs. See everything on the generous 4.5-inch displays with up to 640 vertical pixels for crystal clarity. With a screen that size, it’s easy to take advantage […]