Its time you started fishing with the power of CHIRP sonar.The Garmin echoMAP series of chartplotter/sonar pushbutton combos have built-in Garmin HD-ID traditional sonar plus ClearVü that provides the clearest scanning sonar images on the water. They have the most accurate GPS for its class. This version is preloaded withBlueChart g2 HD coastal and offshore maps and includes a GT20-TM transducer.ClearVü scanning sonar is built into echoMAP cv combos. ClearVü gives you the clearest, nearly photographic sonar view of whats below your boat. It uses an all-in-one HD-ID and ClearVü transducer allowing you to have both traditional and ClearVü images on your screen. The Garmin CHIRP difference:The built-in sonar capabilities of echoMAP 44cv include CHIRP sonar, the most sophisticated sonar technology available for the fishing and boating public. CHIRP sonar provides amazingly clear target separation and definition because it puts even more energy onto the target than traditional sonar. It also includes sonar-recording capability that coordinates the timing of the sonar return with your boat's position and saves digital information for playback on a computer usingHomePort planning software. Use the user data sharing cable to share waypoints and routes between multiple devices. Clearest scanning sonar images:Garmin ClearVü scanning sonar gives you a nearly photographic, wide image of what passes below your boat. You clearly see structure, submerged objects and fish. Traditional Garmin HD-ID sonar and ClearVü scanning sonar are combined into one transducer. Also provides HD-ID support for Minn Kota and MotorGuide trolling motors with integrated transducers. Preloaded BlueChart g2 HD Maps: echoMAP CHIRP 44cv is preloaded with BlueChart g2 HD maps covering the coastal U.S. (East Coast, West Coast, Gulf of Mexico, U.S. and Canadian sides of the Great Lakes). It also includes all U.S. charts for the entire coastline as well as everything available on NOAA charts. In addition to the basic charts, tidal stations, currents, depth contours, IALA symbols and included fishing charts, BlueChart g2 HD offers smooth transitioning between zoom levels and more seamless continuity across chart boundaries. Customize your screens with Shallow Water Shading, which allows you to contour shade for all depth contours shallower than what you