ECHOMAP Plus 44cv WITH GT20 Transducer This compact combo has lots of built-in benefits. Easy-to-install and even easier to use, it has a bright screen 4.3 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 ClearV scanning sonar for nearly photographic images of whats below the boat. ECHOMAP Plus 44cv comes preloaded with BlueChart g3 charts with integrated Navionics data, covering the coastal U.S. 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.