Fish Finder Reviews
Garmin 400c fishfinder review

Garmin 400C Review

So you’re looking to purchase the best fish finder, you don’t need all the bells and whistles, but you do want a unit with a color display and a dual transducer?  If that’s the case, the Garmin 400C may very well be the model for you!  The Garmin 400C is still in the entry level Fish Finder price range but offers some upgrades over basic units.  If you know anything about Fish Finders, you know that when you see the name Garmin, you know you are looking at a quality product.

Garmin 400C
Garmin 400C

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Garmin 400C Fishfinder Specifications

  • The Garmin 400C is adaptable to both freshwater and saltwater conditions, with a dual-frequency transducer
  • It comes with an Ultra-bright, 4-inch, full-color QVGA display with 320 x 240 pixels of resolution
  • The 400C also comes with UltraScroll technology, which updates the screen at live-action speeds
  • Night mode provides low-light readability
  • the built-in CANet connectivity enables your sonar data to be shared with other Chartplotter displays
  • This unit weighs 1.5 pounds and measures 5.72 x 5 x 2.73 inches (W x H x D)

Garmin Fishfinder 400C Reviews

When reading through reviews of the Garmin 400C, one thing that stands out is the fact that once you’re a Garmin customer, you seem to be one for life.

One reviewer said:

“After purchasing the 400C to replace an old unit on my boat, I loved it so much I decided to buy another for my other boat”

That statement there speaks for itself!

Yet another reviewer:

“When I sold my boat, my Garmin 400C went with it. I immediately bought another for my new boat.”

Some other things that stood out were:

  • The Clarity of the screen, in any light condition
  • The simplicity of the menus
  • The ease of connecting the 400C to other plotters
  • The unit also tells water temperature

A complaint that seemed to show up a few times what that the users manual leaves a little to be desired, but it is dually noted that the controls are pretty easy to figure out.

There were a couple of reviews across the internet that pointed out the fact that this particular unit had a lot more sensitivity than their last unit. Being the customers pointed this out early in their review process, I’m lead to believe that this was a major benefit of this product.

A big stumbling block when looking for the best fish finder is deciding what unit will not be a hassle to install. Will the fish finder transducer fit my current setup? Is this something I can easily assemble? Well, there were a couple of reviews that definitely pointed out that the installation of this unit was an absolute snap.

Garmin 400C Pros & Cons


  • Easy to install
  • Color graphics
  • Price


  • Not a very intuitive menu

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Our Recommendation

After taking the time to review this product, reading many reviews, we have come to the conclusion that if you are looking for a fish finder with a color display and don’t need a unit that has a built-in GPS you will be very happy with this unit. Garmin did a very good job balancing the basics with some very cool add-on features, without making a thing to confusing for the recreational fisherman.