Humminbird Piranhamax 4Meet the Humminbird PiranhaMAX 4 a compact, dependable fishfinder designed for freshwater and nearshore anglers who want clear, quick views of fish, structure, and depth on every outing. Its bright 4. 3" color display and robust sonar deliver confident readings in any light. Display: 4. 3" color TFT display, 480 x 272 resolution, 256 colors with backlight for crisp, readable sonar imagery in varying lighting conditions Standard sonar: Dual Beam