With Raymarine's affordable, high-performance Dragonfly series of combination sonar/GPS, the power and crisp detail of ClearPulse® CHIRP sonar is now within the reach of the inland and coastal salt water angler. Using Raymarine's exclusive ClearPulse® technology and a true 2-channel transducer, users see dramatically revealing images of fish and the structures where they hide -- in both DownVision and conventional sonar simultaneously.