Humminbird PiranhaMax 220 4-Inch Waterproof Fishfinder Offers incredible ease of use with true, grayscale images and a host of convenient features Dual-beam, with 20-, and 60-degree beam angles and operating frequencies of 200 kHz and 83 kHz Reliable down to a depth of 600 feet, and provides a target separation of only 2.5 inches 4-inch FSTN LCD display with 240 x 160 lines of resolution in 4-level grayscale Comes with XHS 9 20 T Transom Mount Transducer, and a 1-year limited warranty