The PiranhaMax 175 is another brand new unit, released in 2013, and it actually takes the place of the PiranhaMax 170. It has a black and white screen, 16 Level Grayscale, 4-inch diagonal wide display, and a pixel resolution of 240X160. It has a different layout from the PiranhaMax 170, and comes with a tilt and swivel mount. The older version, the 170, has only a fixed … [Read more...] about Hummingbird Fish Finder PiranhaMax 175 Review