Garmin Echo 300c Dual-Beam Fishfinder Review 2019

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The Echo 300c Dual-Beam Fishfinder is one of Garmin’s older offerings, and it’s currently discontinued by the manufacturer. They’re still available, though, and it’s certainly not outdated. The Garmin Echo 300c has some great sonar capabilities in a compact package, making it ideal for those with smaller vessels.

Garmin Echo 300c Dual-Beam Fishfinder


The screen on the Echo 300c has a 3.5” 256 color screen, making it pretty unique for the price. The screen has a resolution of 240×320 pixels as well, so it’s remarkably sharp for such a cheap unit. The LED backlight makes sure that you’ll be able to read it easily whatever the conditions around you, making the screen surprisingly useful despite its small size.

Display Rating: 6/10

Finder System

This fish finder supports both of Garmin’s standard transducers. This gives you a bit of versatility when it comes to finding exactly what you need in this area. Both the 77/200 kHz and 50/200 kHz are fine options, and it comes standard with the 77/200 kHz model.

It’s no slouch when it comes to power either, it boasts 400W RMS power and can see clearly down to about 1,500 feet. The depth makes it suitable for lake or near-shore fishing, although it’s clearly not intended for use in the open ocean.

The Garmin Echo 300c uses Dual-Beam technology, so you’ll be able to read off of both of the frequencies simultaneously. This means more information for your viewing pleasure at one time. It also comes equipped with smooth scaling, so you won’t lose track of what’s going on under the waves during your journey.

Finder Rating: 7/10

Additional Functions

Unfortunately, this unit lacks a GPS or really any of the other features we’ve come to expect from modern fish finders. This isn’t a total wash, though, it still has all of the usual suspects like temperature and speed ratings in addition to the sonar capabilities.

Extras Rating: 6/10

Ease of Use

This unit, thanks in part to the lack of extraneous features, is magnificently simple to use. Once you’re attached, you’re good to go and you’ll find that you can easily use it no matter who you are.

It’s pretty obvious when looking at the Echo 300c that it was designed to be as simple as possible, and that makes for something which even a complete amateur can quickly pick up and use. Even better, the compact nature of the finder itself makes it suitable for almost any vessel since the smaller footprint won’t take up a lot of room.

One of the nice things about all of the smaller Garmin fish finders is that you can easily attach them to your vessel. Their installation can be measured in minutes instead of hours, and you’ll be ready to go in no time.

Ease of Use Rating: 9/10

Overall Rating

The Garmin Echo 300c might just be the best fish finder you’ll be able to find for under $300. It’s simple, easy to use, and the sonar readings are quick and accurate. It also has the ability to reach down to some fairly impressive depths for such a cheap unit. If you’re the type of angler who’s dedicated to their smaller vessels, or even if you just want the best value for your money, take a good look at this one. It’s sure not to let you down, so snap one up before the remaining supply are gone.

Overall Rating: 7/10


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Hi! I’m Steven!

I am an avid life long fisherman, having caught over 25,000 fish over the years. My life-long passion for fishing began when my father taught me how to fish at the age of ten. I started to share my extensive knowledge of all things fishing.

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