Garmin 010-01884-00 Echomap Plus 42Cv Without transducer, 4.3 inches

This compact combo has a whole lot of built-in benefits. Easy-to-install and even easier to use, it has a bright 4.3” display that may be easy to read on a sunny day on the water. It features built-in reinforce for Garmin CHIRP traditional sonar that delivers remarkable target separation and CHIRP ClearVü scanning sonar for just about photographic images of what’s below the boat. Preloaded around the world basemap and BlueChart g2 HD and BlueChart g2 Vision HD compatibility. Plus, it has Quickdraw Contours mapping software to right away create personalized fishing maps on-screen with 1’ contours as you fish. You own these maps. They’re yours to keep private or share with the Quickdraw Community on Garmin Connect. Plus, you’ll be able to share waypoints and routes with other ECHOMAP or STRIKER units. It also features a quick-release mount allowing you to quickly put off your device from power and mount. 
Bright, Sunlight-readable 4.3″ combo
Built-in reinforce for Garmin CHIRP traditional sonar plus CHIRP ClearVü scanning sonar (transducer sold one at a time)
Preloaded around the world basemap; compatible with bluechart G2 HD and bluechart G2 vision HD
Built-in quickdraw contours mapping software right away creates personalized fishing maps on-screen with 1′ contours as you fish
Share waypoints and routes with other echomap or striker units