Delivering the power and precision of CHIRP sonar, the Garmin EchoMAP CHIRP Sonar Units offer some of the easiest-to-use, advanced sonar and chart plotting capabilities available today - all at a reasonable price point. Brilliant colour displays offer maximum viewing clarity in all light conditions as well, and the units also feature convenient Keypad Controls. Each unit also comes equipped with a fast, responsive 5 Hz GPS/GLONASS Antenna and pre-loaded LakeVu HD maps. Offering unprecedented convenience to boot, all of the cords also plug directly into the mount, allowing you to quickly install and remove your device from power and mount. Each unit also includes both trolling motor and transom mounts. Garmin CHIRP sonar, the most sophisticated sonar technology available for the fishing and boating public, 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 using HomePort planning software (free download). You can also use the user data sharing cable to share waypoints and routes between multiple devices.