Lowrance Mark-4 Marine GPS Review

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If you have always wanted both a fishfinder and a chartplotter but is worried about the damage it might do to your budget, Lowrance now presents the Mark-4 marine GPS which could very well be the solution to your long-time dilemma.

The Lowrance Mark-4 is a compact dual-frequency and dual function fishfinder and chartplotter. It is value minded, highly efficient, and makes no compromises. It has been proven time and again to be easy to use regardless of situation and even under the bright sunlight. It uses a sonar technology that is so effective in identifying specific underwater fish and structures.

Lowrance Mark-4 Fishfinder, Chartplotter and Marine GPS

Lowrance Mark-4 Combo Base Fishfinder and Chartplotter Marine GPS

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The Lowrance Mark-4 is currently the #1 bestseller in Marine GPS Units and Chartplotters at Amazon. If you are familiar with such units, you would not be at all surprised as this probably tops your must-buy list. But if you are a newbie, you might want to check this Lowrance Mark-4 out because it just might be the only gadget you will need on your fishing or out in the wild ocean adventures.

It is nice and affordable yet does not come short of wonderful specifications that make purchasing it even more worthwhile. As customers who have previously used this put it, the Lowrance Mark-4 is a very powerful little combo that provides accurate information.

To know more, here is the full list of the specifications:

  • New Brighter LED Backlight
  • Exclusive TrackBack Feature
  • Best-In-Class Lowrance Fishfinding Technology
  • Easy-to-Use Menu Page
  • Simple Menu Controls
  • Simplified Menu Navigation
  • Quick Release Tilt
  • Swivel Bracket
  • Ultra Accurate Internal GPS Antenna
  • Built-In GPS
  • Chartplotter with Basemap
  • Includes Transom Mount 83/200 kHz transducer
  • 1-Hand Operation
  • Up to 120j of Fishfinding Coverage
  • Micro-SD Cardslot for High-Detail Mapping Options
  • Display of 5 inches or 12.7 cm
  • Screen of 3.5 inches or 8.9 cm
  • Screen Resolution of 16-level grey scale 320 x 240
  • Operating Dual Frequency 83/200 kHz
  • Measures 4.3 x 3.3 x 1.5 inches
  • Weighs 2.5 pounds
  • 1-Year Limited Manufacturer’s Warranty for Parts and Labor


The Lowrance Mark-4 is famously regarded as a simple but intuitive unit that is extremely easy to operate. As a result, it quickly became a favorite in the marine industry and those who frequently go fishing. If you consider fishing as a serious hobby, then the more you should consider a serious fishfinder and chartplotter.

There are numerous reasons why this Lowrance Mark-4 is regarded as one of the best basic but efficient models for the money. Learn more of the great features below:

  1. Lowrance Mark-4 Combo Base Fishfinder and Chartplotter Marine GPSIt functions both as a fishfinder and chartplotter

The Lowrance Mark-4 is much favored because it is like hitting two birds with one stone. It is both a fishfinder and a chartplotter.

As a fishfinder, this unit will supply you with the most important facts with regards to depth and bottom composition and other information that you need in order to get your targets. See here how to use the fishfinder feature. In addition, this comes with a low profile, high speed, transom-mount 83/200 kHz Skimmer transducer with built-in temp sensor and trolling motor-mount bracket option.

  1. It is easy to install and even easier to use

To make plug and play easiest, this Lowrance Mark-4 comes with a quick-release mounting system featuring tilt and swivel bracket. There is also an accessory mounting kit option where one can simply flush mount this fishfinder and chartplotter for better access. Click here for the installation manual.

This unit is also specifically designed to be easy to use. One can totally operate this using one hand which we know is of utmost importance especially when you are out and about at sea. In addition, it features a simplified menu with easy-to-use page and menu controls. For the operation manual click here.

  1. It gives you ultimate control

Thanks to the TrackBack feature of this Lowrance Mark-4, one has greater control of everything for as long as you are out in the water. This feature paves way for one to go back through the sonar-display history and even save waypoints if needed.

In addition, anyone can quickly identify baitfish or game fishes. It even comes preloaded with a detailed basemap and compatible with other useful features such as Fishing Hotspots Pro and Pro Navionics.


Pretty much everyone who has bought this Lowrance Mark-4 has voiced their satisfaction and contentment. It has everything one ever needs and for those times you are unsure of what you have done, you can simply hit the reset button and everything will return to normal.

However, some customers say that it would have been a more pleasurable experience if this unit comes with a bigger screen and better color imaging.

Final Verdict

Lowrance Mark-4 Combo Base Fishfinder and Chartplotter Marine GPS

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Simplify your life while boosting your operational learning curve with this Lowrance Mark-4 marine GPS. It goes far beyond the basic functions of an ordinary fishfinder and chartplotter yet remains easy to use with simple controls and intuitive functions. It simply has everything one ever needs that will hand anyone satisfaction at a very practical price.