Raymarine Dragonfly-4dv fishfinder with CHIRP Down vision

The Dragonfly 4dv is a well priced sonar that uses wide spectrum CHIRP sonar imaging technology. Unlike conventional fishfinder that transmit at a single frequency with each pulse, Dragonflys DownVision sonar uses CHIRP technology to transmit across a wide spectrum of sonar frequencies simultaneously – the result is much higher-resolution, life-like sonar images. An all weather optically bonded display deliver brighter colors, sharper contrast, and will never fog up.  Supplied with a CHIRP Transom mount transducer.