Humminbird PiranhaMax 240 4-Inch Waterproof Fishfinder Offers incredible ease of use with true, grayscale images and a host of convenient features Tri-beam, with two 20-degree beams, and a 35-degree beam, operating on 200 kHz and 45 kHz frequencies Reliable down to a depth of 800 feet, and provides a target separation of only 2.5 inches 4-inch FSTN LCD display with 240 x 160 lines of resolution in 8-level grayscale Comes with XHS 9 20 T Transom Mount Transducer, and a 1-year limited warranty