This compact combo has lots of built-in benefits. Easy-to-install and even easier to use, it has a bright screen 4-3/10? display that is easy to read on a sunny day on the water. It includes a GT20 transducer for traditional Garmin CHIRP sonar that delivers remarkable target separation and CHIRP ClearVu scanning sonar for nearly photographic images of what?s below the boat. It comes preloaded with LakeVu g3 maps with integrated Navionics data, covering more than 17,000 lakes with up to 1? contours. Plus, it has Quickdraw Contours mapping software to instantly create personalized fishing maps on-screen with 1? contours as you fish. You own these maps. They are yours to keep private or share with the Quickdraw Community on Garmin Connect. Plus, you can share waypoints and routes with other ECHOMAP or STRIKER units. It also features a quick-release mount allowing you to quickly install and remove your device from power and mount. Transom and trolling motor mounts included. Garmin CHIRP technology provides traditional sonar support for Minn Kota and MotorGuide trolling motors with integrated transducers. Garmin CHIRP traditional sonar and CHIRP ClearVu scanning sonar are combined into one transducer. The preloaded LakeVu g3 maps give you excellent detail of underwater features, plus Shallow Water Shading allows you to designate a minimum depth. It also shows interstates, general roads and bridges, designated fishing areas, boat ramps, marinas and campgrounds. When you?re off the water, it?s easy to keep your ECHOMAP Plus combo safe and secure. You don?t have to mess with plugging and unplugging wires from the unit because the cords plug directly into the mount. This allows you to quickly install and remove your ECHOMAP Plus from power and the mount. Note: This model does not support 3-D mapping views on BlueChart g2 Vision HD.