The big-screen Lowrance LC X-16 CI Sonar GPS presents vividly colored detail for mapping and sonar functions - or both simultaneously. Harkening back to the legendary X-16 paper graph recorder, this new version offers excellent target separation. From beneath its snap-on sun shield, the 6.38" color display takes the new unit's functionality a step further, allowing users to "paint" important underwater targets with the color scheme of their choice. The 12-parallel-channel GPS receiver and antenna work with the unit's GPS mapping functions and an included MapCreate CD-ROM to build and save customized maps. The LC X-16 CI zooms in or out with the touch of a button, depending on the desired view, with 34 ranges from 0.1 to 4,000 miles. With many of the same sonar features on a 5.6" screen, the LC X-15 CT offers readability in direct sunlight, as well as an option package to add the GPS functionality.