Available in 4-, 5-, 7- and 9-inch screen sizes, all Lowrance Hook Series models feature CHIRP Sonar, which provides improved target identification at greater depths, a clearer display with less interference and enhanced target separation, so anglers can more easily distinguish baitfish from game fish. DownScan Imaging™ is also available on most models to give anglers a clear, photo-like view of the fish-holding structure beneath the boat. Packed with Lowrance exclusives like Advanced Signal Processing (ASP) for excellent target separation and superior noise rejection, Hook Series helps anglers more easily identify baitfish and gamefish targets. Controlled with an easy-to-use interface, the convenient page selector menu allows quick access with one-thumb operation. All Hook Series fishfinder/chartplotter models feature a highly accurate, built-in GPS antenna that displays position on a detailed U.S. basemap, with more than 3,000 lakes and rivers and detailed coastal contours to 1,000 feet. www.lowrance.com