If you're looking for a basic, monochrome fish finder at an affordable price, that also has GPS, the PiranhaMax 176i may be exactly what you need. This unit has a 4-inch diagonal display, 16 Level Grayscale, with a 240V x 160H pixel resolution and backlight. It has a depth capability of 600 ft., having a power output of 200 Watts (RMS) / 1600 Watts (PTP). It has Dual Beam … [Read more...] about Hummingbird Fish Finder PiranhaMax 176i Review