E color echo 301c is a Powerful, simple-to-use fish finder featuring a built-in advanced HD-ID sonar with or without a 77/200 kHz transducer (supports 50/200 kHz transducer, sold separately).The bright 3.5-inch color display is readable in sunlight. Its 2,400 W peak-to-peak Power provides clear target separation and structure details down to 1,750 feet maximum . Smooth Scaling graphics provide uninterrupted imagery when switching between depth-range scales, and wide viewing-cone angles (60/120 degrees) optimize performance for use in deep or shallow water. It comes ready-to-go with a quick-release tilt/swivel mount and transom/trolling transducer mount kit. So you can get right to fishing.