Lowrance HDS-7 Gen3 Fish Finder

Lowrance HDS 7 GEN3 Review

A fish finder doesn’t only help you locate fish; it also assures maximum productivity out of your fishing sessions. But finding a fish finder that performs well and doesn’t empty your pocket is quite a tough job. Stress not because we are here to help you out with a detailed and unbiased Lowrance HDS 7 GEN3 Review. 


I have a group of friends who live to fish. We all have used different fish finders, and after evaluating those all, we’ve finally reached the conclusion that there is no fish finder like Lowrance HDS 7 GEN3.

But what makes it so unique? You’ll learn shortly


Significant Features of Lowrance HDS 7 GEN3


Below are the highlights of this Lowrance HDS 7 GEN3 Review, the features that set this fish finder apart from the other ones.

Screen and display:

From the name, it is apparent that this fish finder has a 7-inch screen. You can operate it with both buttons and a touch-screen, which makes using it as easy as using your regular tablet.

The display comes with a resolution of 800 x 480, and the aspect ratio is also the basic 16:9. The waterproof screen also has an LED backlight, which allows you to use it even in bright sunlight without any trouble.

Lowrance HDS 7 fish finder review


This fish finder contains both USA charts and normal reference maps. You can also pair it with other navigating tools such as Navionics, Insight HD Pro, etc.


It also allows you to customize your maps using the Insight genesis online app.

Now, what is the difference between HDS Gen2 and Gen3? Gen3 devices have StructureMap, which Gen2 devices lack. This feature allows Gen3 users to customize their maps depending on the place and situation.

StructureScan also aware you of the underwater environment by showing both live and recorded sonar. It can save as many as 3,000 waypoints, 100 routes, and 100 trails, each containing 10,000 points.

Another exciting feature of this fish finder is the ‘’GoFree’’ option. This cloud feature lets you copy maps from other users at a limited distance.

Although, the GPS capabilities aren’t the same as the commercial fish-finders that professionals use. But at this price range, the features Lowrance HDS GEN3 offers are more than we could ask for.



As mentioned earlier in this Lowrance HDS 7 GEN3 Review, it can be connected to navigating tools as well as the online app of Insight genesis. It has Bluetooth too.

The reality is, you will have to use wires on this fish finder only while charging it. Things such as software updates, loading new maps, connecting to the phone, etc., are all wireless.

Like many other fish finders, you will not have to connect it to a computer for software updates.


SD Card: 

The internal memory of this device is 7.8GB, which is enormous on its own. But if you want to spend a whole lot of time on the water, it is better to have backup SD cards. That way, you’ll be able to save more routes and other data.


This device allows you to use two micro-SD cards at a time, those being up to 32GB. You can change SD cards within seconds, ensuring that you don’t lose any of your precious data.


Chirp Imaging: 

Various other fish finders rely upon only one frequency, but not this one! It uses chirp imaging which collects the data using the combination of different frequencies.

If you compare the images produced on this fish finder to others, you’ll notice a massive difference in terms of clarity.

Chirp imaging being paired with Lowrance HDS lets you get a clear view of the world under your boat. In fact, it filters the clutters around your target and separates it from the surroundings.


StructureScan and DownScan Imaging

These two are the words you’ll come across the most while learning about fish finders.

To explain a bit, StructureScan is the technology that gives you data about what’s around your boat. Through it, you get a 180-degree view to your left and right.

On the other hand, DownScan shows you the environment underneath your boat, focusing on clarity more than anything.

The powerful StructureScan and DownScan ability of Lowrance HDS 7 GEN3 make it the ideal tool for fishing.


Transducers and other accessories: 

Transducers are among the most vital parts of fish finders that combine all the individual frequencies to provide you the ultimate data. So anyone who uses fish finders wonders, ‘’What is the best transducer?’’

Well, a transducer that adjusts the down-imaging and side-imaging to produce the most precise image is an efficient one.

The fish finder being discussed contains two transducers: one of 83/200 kHz, and the other is 455/800 kHz. The simultaneous activity of these two ensures a photograph-like clarity of the images produced.

The package also contains a Lowrance HDS-7 gen 3 manual, sun covers, power cables, fuse, and caps for the fish finder.


Buying Guide: 



The images produced by Lowrance HDS 7 GEN3 are outstanding. No other fish finders of this price range offer such clarity.


Networking and connectivity: 

This fish finder features various types of networking options. From Bluetooth, Wi-Fi to downloading maps from other users, the number of possibilities is beyond counting!



This portable fish finder is suitable for different types of boats, water, and weather. It is also compatible with mapping apps, external SD cards, and accessories from Lowrance and other brands.


Final Words: 

From this Lowrance HDS 7 GEN3 Review, it is apparent how worthy of a tool this fish-finder is. It offers you all the necessary features for fish finding and some exceptional abilities that take it up a notch compared to other fish finders.


The design, navigation, connectivity, and other capabilities of this fish finder make it an ideal choice for every fisherman. So in case you were wondering what is the best fish finder on the market today, you’ve got your answer. 



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