This compact combo has lots of built-in benefits. Share waypoints and routes with other ECHOMAP™ or STRIKER™ units.Built-in Garmin Quickdraw™ Contours mapping software instantly creates personalized fishing maps on-screen with 1’ contours as you fish.Preloaded BlueChart® g3 charts with integrated Navionics® data for the coastal U.S.Includes GT20 transducer for Garmin CHIRP traditional sonar plus CHIRP ClearVu scanning sonar with transom and trolling motor mounts.