Humminbird Piranhamax 4

The Humminbird PiranhaMAX 4 is a compact dual-beam fishfinder for small boats, kayaks, and anglers who want a simple depth display with the transducer included. Its 4.3-inch color screen uses 200/455kHz sonar, while the XNT 9 28 T transom sensor makes it ready to install. There is no GPS, charting, or waypoint navigation in this model.

The 480 x 272 screen keeps the unit small enough for a compact console or portable fishing setup. The 200kHz beam reaches the listed 600 feet, while 455kHz provides more detail to 320 feet. That difference is useful to understand: the lower frequency favors depth, while the higher frequency gives a tighter view in shallower water. This is a straightforward sonar unit for freshwater fishing, not a networked marine electronics system.

Who Is This For?

This compact dual-beam fishfinder suits kayaks, small aluminum boats, jon boats, and freshwater anglers who need basic depth information. It is not ideal for coastal chart navigation, GPS waypoint use, SideScan, or a connected NMEA 2000 installation.

Warranty & Support

Humminbird provides a 1-year limited warranty. The supplied specifications do not state warranty exclusions or service procedures.

The PiranhaMAX 4 is the simple, compact fishfinder in this group, with the display and transducer included. Its trade-off is limited capability: no GPS, mapping, networking, or side-looking sonar. Choose it for basic freshwater depth and fishfinding on a small boat, not for a growing marine electronics system.