Featuring a tilt-mount base and a 256-color 4.3 screen with a 480 x 272 resolution, Humminbirds PiranhaMAX 4 DI Sonar makes it easy to explore underwater terrain. Down Imaging operates at 455kHz to deliver depth capabilities of 320 ft. at 75. DualBeam operates at either 200kHz with a 28 beam or 455kHz with a 16 beam to deliver viewing capabilities down to 600 ft. Peak-to-peak power output of 2,400 watts. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Sonars.