Humminbird 140C Fishin’ Buddy Waterproof Fishfinder Review

Without a doubt, the 140C Fishin’ Buddy is the best waterproof fishfinder from Humminbird thanks to the exclusive SideFinder/Side Imaging Sonar feature.

The color display is an awesome element of the device as it provides loads of details of the scanned area.

The fishfinder offers enough wattage for basic fish finding performance which should be enough for most fishermen.

The transducer tube housing facilitates use and installation of the fishfinder.

This tool can be used for an extended period of time and can run at both fresh and saltwater thus providing loads of flexibility.

According to some Humminbird 140C Fishin’ Buddy Waterproof fishfinder reviews, the battery pack has thin wires and connections, which may cause durability issues in the long term.

1.Humminbird 140C Fishin' Buddy 3.5-Inch Waterproof Fishfinder


Our Review

Undoubtedly one more best rated fishfinder on the market, the Humminbird 140C Fishin’ Buddy is equipped with a revolutionary sonar technology that makes your time on the water more productive. Unlike standard sonar, which looks straight down below the boat, Side Finding Sonar utilizes a razor-thin beam that projects up to 120 feet to both sides of your watercraft, for 240 feet of coverage across the bottom. Though they look like photos, the sonar images are not dependent on light. Darkness, mud and silt will not interfere with side imaging. Natural structure, submerged wreckage like boats, automobile and even schools of baitfish show up in the device’s side finding sonar returns. The device can operate in depths of shallows 2 to 3 feet. You can point the SideFinding sonar in any direction

The 3.5-inch color TFT display offers a pixel matrix of 240 horizontal and 320 vertical, with 256 colors in grayscale. You can see images with crystal clarity that you might even think they were taken by a camera. The images are clear enough even when the water is murky. The color display boasts high resolution so you can enjoy vivid details or images even in bright sunlight. This eliminates squinting and looking at the display intensely when all you want to do is position your fishing rod in an optimal way to catch all the fish.

The Down and Side Finding Sonar offers 1000 watts peak-to-peak power output, ensuring ample depth coverage and accurate readings. The device is also able to show you the water temperature, so you can easily find out why the fish aren’t biting. The wattage rating enables the user to know whether the fish are deeper or shallower on a specific day. It enables the device to indicate fish activity as well, whether they are moving aggressively and very active or silent and inactive. The user can also actually see the distance of the fish as they move toward or from the boat.

3.Humminbird 140C Fishin' Buddy 3.5-Inch Waterproof Fishfinder

Equipped with a 24- to 40-inch extendable transducer tube housing that can reach the water from nearly every small and medium-size fishing boat, the Humminbird 140C Fishin’ Buddy Waterproof fishfinder comes with an ergonomic clamp design made for use almost anywhere. Providing the ultimate in portability, the 8.3-pound unit requires no wiring or rigging or even a transducer to install properly. You can use the device on your boat or your friend’s, a float tube or a dock. Measuring only 15.1 x 11 x 29.1 inches, the device is a tool you can bring anywhere and that is easy to store.

The Humminbird 140C Fishin’ Buddy runs on good quality alkaline batteries. The manufacturer declares that the device can provide 30 hours of operation, but one male user claims he can get from 35 to 40 hours of operating time in total and only has to change the batteries every ten trips on the water or so.



The Humminbird 140C Fishin’ Buddy waterproof fishfinder is a versatile basic device that can be used anywhere. It employs cutting-edge SideFinding Sonar that projects to 120 feet to both sides of your boat, for excellent depth coverage and bottom detail imaging.


1 Star2 Stars3 Stars4 Stars5 Stars (46 votes, average: 4.76 out of 5)


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