The Powerful, simple-to-use echo 201 has the advanced sonar features you"d expect to find only on much higher-priced units. The built-in Garmin advanced HD-ID sonar with or without a 77/200 kHz transducer (supports a 50/200 kHz transducer, sold separately) gives you excellent target separation and fish arch definition on the crisp 5-inch, grayscale Display. Its sonar transmitter with 2, 400 W peak-to-peak Power output dives down to a Maximum depth of 1, 750 feet¹ - and Smooth Scaling graphics provide uninterrupted imagery when switching between depth-range scales. Comes ready-to-go with a quick-release tilt/Swivel mount and transom/trolling transducer mount kit. So you can get right to fishing