Looking for the Cheap Underwater Metal Detectors?  You’ve come to the right place.

 Our Top Picks For You… 

Well, many of you might have done a lot of browsing to get information about the best and cheap metal detectors for underwater purposes! Well, our article offers exactly what you desire.

A lot of cool, advanced, and highly functional waterproof metal detectors are present in the market but the question rises “ARE THEY CHEAP?” Well, to help you answer your question, our team has selected the top four metal detectors that work best underwater, are highly functional, and not to mention are budget-friendly. So, let’s get started!

 My Top Pick… 

In this time-starved world, where you don’t even have time to read the entire article, we have selected a top pick for you to save your time! Well, Garrett AT Pro Metal Detector is the best option for a quick pick. This metal detector is completely waterproof. So even if you slip and your gadget accidentally falls in the water, you don’t have to worry about losing your money!

Cheap Underwater Metal Detectors (2021)

Garrett AT Pro Metal DetectorGarrett
22 x 11 x 5 Inches
3.02 Pounds
Check Price
Fisher 1280-X Aquanaut Metal DetectorFisher Labs Metal Detectors
22 x 11 x 5 Inches
4 Pounds
Check Price
Garrett ATX Metal DetectorGarrett23.2 x 17.4 x 5.9 Inches
14.6 Pounds
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Tesoro Sand Shark Metal DetectorTesoro21.4 x 8.8 x 4.6 Inches
6.2 Pounds
Check Price

Let’s dive into the detailed review section of these products!

1.) Garrett AT Pro Metal Detector:

Garrett AT Pro Metal Detector is a top-ranking product that is a bit expensive as compared to other Garrett gadgets but it certainly has the aspects worthy of its price. If you are planning on hunting treasure in water, then obviously you need a detector that’s watertight. Well, Garrett AT Pro Metal Detector 2021 has what you need. Let’s look at what it’s got to offer!


The first and foremost feature that Garrett AT Pro Metal Detector got to offer is its waterproof design although the headphones that come with this Cheap Underwater Metal Detectors are not waterproof. But, the company does offer separate waterproof headphones. It offers pro audio technology.

This feature hones multiple tones when it’s over the top of the target. These simultaneous tones tell the hunter about the depth, conductivity, and shape of the object. If this feature is turned off, then you’ll hear monotones only.

With its iron audio feature, you can easily identify the target as ferrous or non-ferrous. It has a single frequency of 15 kHz enabling you the hunter to find all types of metal objects. It has both manual and automated ground balancing feature. Its 8.5″ x 11″DD coil is excellent for detecting the treasure.

2.) Fisher 1280-X Aquanaut Metal Detector:

Fisher 1280-X Aquanaut Metal Detector a top-quality underwater metal detector that comes at variable prices depending on the size of the search coil. It’s a versatile and highly adaptable gadget that performs remarkably on both land and water. Its features are as follows


Fisher 1280-X Aquanaut comes with Piezo Electric headphones that are made waterproof. This gadget works well in both freshwater and saltwater. Its other aspects include two search modes i.e. VLF IB which operates at a single frequency of 2.4 kHz and a slow-motion mode. This gadget being motion detector needs to be in motion for the objects to be detected.

It comes with 3 knobs with the help of which you definitely won’t be exhausting yourself by digging trash. These knobs are power/ volume, discrimination, and sensitivity knob. It has an 8 inch and another 10.5-inch concentric spider coil.

This Cheap Underwater Metal Detectors gadget has a depth of about 250 ft. After operating this metal detector in saltwater, you need to wash it with fresh water so that its performance remains unaffected. You also need to wash the headphones. If you are planning on detecting in saltwater, then certainly fisher 1280 X is an excellent choice for this task.

3.) Garrett ATX Metal Detector:

Garrett ATX Pulse Induction Military Grade Metal...
27 Reviews
Garrett ATX Pulse Induction Military Grade Metal...
  • ATX with 12" DD coil
  • Land headphones (waterproof headphones sold...
  • Soft storage/travel case

Garrett ATX Metal Detector is an all-terrain metal detector that works even in underwater. Well, this metal detector is designed in such a way that it’s able to function at all types of grounds whether its land or water, no item can remain undetected. Let’s go through its features!


Garrett ATX Metal Detector is an extraordinary metal detector that comes with a standard coil of 10×12 inch DD search coil. It also offers additional coils like a 15×20 inch search coil and an 8-inch search coil.

It is a complete water-resistant gadget with its control panel and coil being waterproof but the disappointing feature is that its headphones are not watertight! This Cheap Underwater Metal Detectors gadget is actually a pulse detection metal detector that operates on a frequency of about 18-19 kHz.

It has another superb feature and that is its frequency scan button. Voila! Now you don’t have to worry around power lines and another cheap underwater metal detecting to interfere with your hunt! It comes with a motion and a no motion mode. It is charged by AA alkaline battery and comes with an automatic ground balancing along with 3 audio tone features making your hunt a piece of old tackie!

4.) Tesoro Sand Shark Metal Detector:

Tesoro Sand Shark is manufactured by Tesoro. Well, some of you might have not heard its name as it’s not as popular as Garnett or Fisher but still, we can’t keep our eyes shut on the products that are offered by it. This is actually a Pulse induction detector. If you are planning on doing some water hunting, then PI detectors are the best option for you. Now, let’s have a quick go through of its features.


Tesoro Sand Shark uk has a depth capacity of about 200 feet. This USA made gadget has a weight of about 4.5 pounds that can be easily operated by both novices and veterans. Well, this Cheap Underwater Metal Detectors waterproof gadget comes with a water-resistant Stereo Piezo Headphones.

Well, most of the metal detectors come with non-waterproof headphones and you need to buy them separately so, this feature offered by the company is very praiseworthy. With the aid of 8 AA alkaline batteries, this metal detector can keep on operating for up to 20 hrs.

It comes with 2 modes i.e. voltage control oscillator (VCO) and a normal mode. In VCO mode, a loud high pitched tone is generated which is helpful in pinpointing whereas, in normal mode, a monotone is produced (mostly used for beachcombing).

Buying Guide

Looking for the cheap underwater metal detector? Rather than wasting time on Facebook and other social media platforms, what you can do is enjoy thrilling treasure hunt adventures. This hunting adventure is awesome as it keeps you active and healthy. Not only that, but you get to understand the beauty of our earth! Nothing is more pleasing and satisfying than finding a treasure.

Now, you can’t just go with your shovel and start digging where your sixth sense tells you. In this way, it will be ages till you would be able to find a proper treasure. Whether you are underwater hunting or ground hunting, you need to be the owner of an exceptional metal detector device that will detect the treasure for you. In this way, you won’t be making holes in the earth and tarnishing its beauty!

What are underwater metal detectors?

Metal detectors are devices or gadgets that help in treasure detection and indication. A single beep of this device will not only tell you the treasure location where it’s buried but will also tell you the type of treasure that the ground hides.

Therefore, if it’s not up to your fancy, you can just leave it there. This saves you from getting your hands-on trash. Various brands have specially designed metal detectors for various terrains. Some are underwater metal detectors while others are ground metal detectors. There are even various competitive and innovative companies that have launched all-terrain metal detectors.

How to purchase a cheap underwater metal detector?

While looking for a cheap underwater metal detector, you need to consider various aspects. There should be various questions you need to ponder on before purchasing the detector.

Which treasure it should hunt for?

The first question that should pop up in your head is the kind of treasure that you want your metal detector to detect.

For some individuals, when the word treasure is used, the first thing that comes in their mind is gold! While for others it can be different. Some may want to find historic relics hidden in the earth’s chest. Or there may be some individuals who may enjoy finding jewelry. No matter what type of metal detector you are planning on purchasing, you need to be crystal clear regarding the treasure kind that you need to hunt. A hunter should know its prey!

What should be the cost of the detector?

Regarding cost, it depends on you how much you want to invest. The more you invest, the greater will be the results. There is a diversity of them under various price ranges. You can go for a budget one or you can opt for an expensive one. Totally your call.

It is always good to keep your budget flexible so that you can have more opportunities to purchase the best one. This doesn’t mean that the best ones always come pricey. You can purchase the best one even at a cheap price but for that, you need to have a good eye!

What features to look for?

Your metal detector should be water-proof:

If you are planning on going for an underwater treasure hunt, then it’s common knowledge that your device, the entire unit should be made water-resistant. Not just the coil. The whole unit along with its control box should be waterproof so that the water would not affect the performance level of the metal detector.

The coil should be bigger:

Metal detectors use coils to detect hidden treasures. The coil scans the ground and signals if it finds anything. If your coil is bigger, then it means that you would be able to cover a bigger surface area and, in this way, you can cover more ground for a treasure hunt. It is true when they say “the bigger, the better”! Therefore while purchasing a cheap underwater metal detector, look for one that comes with a big coil.

The metal detector should be lightweight:

Treasure hunting takes a lot of your time. And for that, you should always opt for a hunting device that is lightweight. One that will not drain your energy during the hunt. In this way, you would be able to search for a long time without getting tired. A bulky one will surely hinder your progress. Therefore, look for a lightweight metal detector.

The Metal detector should be durable:

Your metal detector should be made durable. It should be a perfect blend of durability and versatility. Its components should be made of premium quality. The gadget should have sturdy built-up.

Wrap up:

Hunting for the cheap underwater metal detector may seem a tough row to hoe but with the various features and factors mentioned above, you certainly can purchase the best one!


Can metal detectors work underwater?

Yes, there are specific metal detectors that are designed to work underwater. The best thing about those detectors is that they are weatherproof. Hence, they can work both in water and on land. Garrett at pro and Garrett ATx are one of the detectors that have the capability to fully immerse themselves I. Water without damaging their circuit.

What is the best underwater metal detector? 

Garrett ATx and Garrett sea hunter Mk II are considered to be the best underwater detectors that have a very wide range and strong detection sensor that can detect faraway metal and other relics with ease.

They are designed exclusively for underwater detection and are enhanced with features that protect the detector from extreme conditions that sometimes happen in water. They are very sturdy and have a great detection variety.

How can you detect metal underwater? 

You can detect metal underwater by using an underwater metal detector that has been waterproofed so that you can enjoy and explore the treasure hidden away in the sea. There are specific ranges and depths according to which detection can be made. Thus, while buying an underwater detector make sure to look over its feature for a better purchase experience.

How do you make an underwater metal detector? 

Just replace the control box with a waterproof one, reconnect all the wires, make sure there are no cuts or breaks and it’s done.

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