The portable 4” STRIKER™ Plus 4 ice fishing bundle is made for ice or open water (Requires Garmin GT20, GT22 or GT23 transducer (each sold separately)) so you can enjoy year-round fishing. It includes a dual-beam ice fishing transducer with Garmin CHIRP traditional sonar for crystal-clear images in shallow and deeper water as well as remarkable target separation. Built-in, high sensitivity GPS lets you mark hot spots, build maps with 1’ contours and view your boat’s speed. The intuitive user interface makes it simple to navigate to whatever feature you need, so you are ready for anything on the water.