Welcome to our review of the Waterproof Garmin 300C Fishfinder.  

In this write-up we will examine the Garmin 300C by looking over its features, comparing customer reviews, and providing an overall rating and recommendation.

Garmin’s Fishfinder 300C with 3.5-Inch Display and Dual-Beam Transducer is a combination fishfinder and GPS that provides the best of both worlds in one convenient package.

The built-in CHIRP technology sonar gives you a clear picture of what’s below your boat, giving you an edge when it comes to finding the perfect fishing spot.

And with its preloaded LakeVu HD maps, you’ll always know where you are on the water.

Garmin Fishfinder 300C Description & Features

Looking for an affordable, freshwater lake fishfinder with a color display? The reasonably priced Fishfinder 300C color fish finder is the perfect choice for many anglers.

Observe Fish in Clear, Bright Color

The 300C possesses a mega bright, full-resolution 3.5-inch QVGA color display. Users of previous Garmin models will be impressed with improvements made to the user and graphical interface.

Get live screen updates with Ultrascroll and incredible shallow water capabilities with a dual-beam transducer.

Screen Size3.5 Inches
Item Weight3.6 Pounds

The Garmin 300C also offers top-rated sonar performance.

300C Features

  • Auto Gain setting automatically adjusts sonar sensitivity
  • See-Thru technology displays strong and weak returns
  • Round flasher display mode
  • Whiteline shows you how thick the bottom is
  • 2X and 4X automatic and manual zoom
  • Battery voltage indicator
  • Single NMEA-0183 output

Garmin Fishfinder 300C Reviews

Sample Customer Reviews

Reviews of the Garmin 300C Fishfinder are outstanding overall with almost all reviews we’ve located being either 4 or 5 out of 5 stars.

Positive Customer Reviews

Has every features you’ll need and it’s simple to use.  Extrememly glad I bought this model. It’s great quality and doesn’t cost an arm and leg.
— L.X.

The portability of this fish finder makes for simple setup and removal. Love the screen, it’s crystal clear regardless of the weather conditions.  It’s nice not having to worry about it getting wet in rain or worse.
— J.O.

Garmin Waterproof Fishfinder 300C

  • Frequency = 80/200
  • Resolution (VxH) = 320 x 240
  • Screen Size = 3.5″
  • Speed/Temp = Temp Only
  • Transducer Type = Transom Mount
  • Watts RMS – Max = 150
4.6/5 - (23 votes)

Welcome to FishFinder Review. Here at we will be examining a variety of popular fish finders, depth finders, GPS, and chartplotters.

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