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The Garmin echo 100 is a basic low-cost freshwater fishfinder.

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extremely simple to use, ideal for entry-level users

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ideal for figuring out how much line to let out, fairly reliable

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works reliably in all kinds of waters

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can read the screen in any lighting, very clear

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mounts on the side of the boat easily and comes right off when you're done

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  • Only 3 words are allowed.

fairly limited depth ability, need to stick to shallower waters

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black-and-white display is a little plain looking

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  • Only 3 words are allowed.


The Garmin echo 100 is a basic low-cost freshwater fishfinder. This is similar to the Garmin echo 150 and Garmin echo 200, but uses a single-beam system and, at 100 watts (RMS) of transmit power, is only capable of reading to a depth of 600 feet. In other ways this system is the same as the Garmin echo 150, including the use of a 4 inch grayscale display that works in 160 x 256 pixel resolution. HD-ID target tracking technology is also used to enhance the separation and definition of images on the screen, and sweeps are done in a 60 degree angle under the boat. This unit has a small form factor that fits comfortably even on smaller boats, and uses a quick-release tilt mount designed to make it easy to install.

  • Garmin HD-ID™ technology
  • Compact design for smaller boats
  • 100 watts (RMS) transmit power
  • Depths to 600 ft
  • Beam width to 60 degrees
  • 4 in, 8-level FSTN grayscale display, 160 x 256 pixels
  • Tilt/swivel mount, transducer, trolling motor clamp and transom mount
  • Dimensions (W x H x D): 4.1 x 5.8 x 2.8 in, 10.4 x 14.7 x 7.1 cm
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