With the included CHIRP 77/200kHz transducer, Garmins Striker 4 Sonar/GPS Combo provides greater sensitivity, improved target resolution and superior noise reduction on the water for clearer, more easy-to-see images of both baitfish and game-fish targets. Plus, you can mark hotspots so you can return to them later and even share your favorite spots with other Striker and echoMAP combos with built-in GPS. Also features Smooth Scaling depth-range adjustments and built-in flasher. 3.5 color display sports intuitive controls for customizing your setup. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Sonar/GPS Combos.