Raymarine Dragonfly-5DVS Sonar 5" All-weather, high-definition LED backlit displayOptically bonded display for sharp color, wide viewing angles, and no internal fogging Includes transom mount CHIRP transducer with temperature sensor Dual-channel sonar - wide-spectrum CHIRP DownVision sonar for photo-like images and a second CHIRP conventional sonar channel for targeting fish Ball and socket tilt swivel mount lets you mount Dragonfly easily on any surface Award winning wide-spectrum CHIRP DownVision sonar technology for photo-like images, high-speed tracking, and better deep water resolution; Includes transom mount CHIRP transducer with temperature sensor