The GT24 Ultra High-Definition All-In-One transducer provides image details so clear and precise, you can actually see fish hanging just off branches of submerged trees, brush and rocks. You can see the difference between bigger and smaller fish and even see individual fish swimming in bait balls. You get the highest resolution ClearVu scanning sonar images available plus amazingly clear high wide CHIRP traditional sonar ? all in one transducer. Ultra High-Definition scanning sonar shows you incredibly detailed images of fish and structure up to 200? below your boat with 800 kHz ClearVu scanning sonar. It?s easy to install with included transom and trolling motor mounts so you can start fishing faster. This transducer is for use with GPSMAP 8400xsv/8600xsv Series chartplotter/sonar combos. The cable is 20′ long and the transducer has 8 pins.