ECHOMAP Plus 73cv is a combo with some serious connections.A 7" diagonal touchscreen with keypad-assist for when it's really wet, a transom mount transducer that dials in two kinds of sonar—high wide CHIRP traditional sonar plus CHIRP ClearVü scanning sonar—with the breakthrough Connected Boat technology of Garmin's ActiveCaptain App.Key FeaturesGet connected with ActiveCaptain App: Garmin's free all-in-one ActiveCaptain mobile app allows you to manage your marine experience from nearly anywhere. It creates a simple yet powerful connection between your compatible mobile device and your chartplotter, charts, maps and the community.Keep your charts up to date: Use the combo's built-in Wi-Fi to pair with the free ActiveCaptain app for access to OneChart, which allows you to update or purchase and download new chartsSmart Notifications from your smartphone appear on the screen: ActiveCaptain also gives you access to smart notifications (when paired with a compatible mobile device), plus the ActiveCaptain community for marina and other points of interest details and boater reviews, Quickdraw Community data and moreClear Scanning Sonar Images: Garmin CHIRP traditional sonar, down-looking ClearVü side-scanning sonar are combined into one transducerCHIRP ClearVü scanning sonar gives you a nearly photographic image of whats below your boatCHIRP traditional sonar shows clear target separation and definition, because it puts even more energy onto the target than traditional sonarIncludes LakeVü HD Charts: High-detail freshwater maps include more than 17,000 U.S. lakes, rivers and reservoirs, including more than 13,000 HD lakes with 1' contours. Excellent detail of underwater features, plus Shallow Water Shading so you can designate a minimum depth. Shows interstates, general roads and bridges, designated fishing areas, launching ramps, marinas and campgrounds.Use Quickdraw Contours to create your own charts: Instantly create personalized fishing maps on-screen with 1' contours. Tailor them to fit your needs. These are your maps — you own them. Keep the data to yourself, or share it with the Quickdraw Community on Garmin Connect.SailAssist: