Underwater metal detectors are great for scuba divers, snorkelers and others who love to explore the water. They can be used to find coins, jewelry, and other treasures that have been lost in the ocean or lake. To help you decide which underwater metal detector is best for you, we will discuss 5 of our favorites!
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Factors to Consider Before Buying Underwater Metal Detectors
The first thing you should consider before buying an underwater metal detector is what type of object you are looking to find. For example, if you are finding coins, jewelry, or other treasures in the ocean, then a waterproof metal detector will be the best choice. If you are only looking for any object that is underwater, then a submersible metal detector would be the best option.
Another important point to note is that because most underwater metal detectors use sound waves to locate objects under water there is always a chance of giving false readings. To prevent these false readings from happening it’s important to limit your search area and use the proper technique.
The last thing to note about underwater metal detectors before making your purchase is that you should always test the detector before using it. This is especially important if you are buying a used metal detector as there could be issues with the device that were not known about when purchased.
5 Best Underwater Metal Detectors
VVinRC TM750 Underwater Metal Detector with Vibration and LCD Detection Indicator

The TM750 metal detector comes with a waterproof profile and will work wonders up to 100 feet in depth. It will work in pretty much any environment, from saltwater to freshwater. It has stainless steel hardware for durability and a low battery sensor to notify you when it needs recharging.
The metal detector tunes up by itself. As you come closer to metals, pulses and vibrations will increase in intensity. There are both blue and red lights, so you can make the difference between different signals. Other than that, it is lightweight and easy to carry around.
RM Ricomax Metal Detector

This metal detector comes with an incredible battery that will last for up to six hours. It will turn off by itself during moments of inactivity, only to preserve the battery. You also have a sensor to notify you when the battery is low.
The unit is fully waterproof and can be submersed in water – about 100 feet. It has a fluorescent green light for extra visibility. You can use it with no prior experience whatsoever. Moreover, it has a high sensitivity, so it can detect small pieces of metal as well. Weighing about a pound, it is suitable for both children and adults.
SuperEye Metal Detector

Featuring a cool design and a convenient operation, this professional metal detector is waterproof and can be used about 40 meters underwater. It has a large searching coil – just under nine inches – and an incredible battery that can keep you going for up to 20 hours, regardless of the environment.
The metal detector allows adjustments, such as the stem range between 43 and 50 inches. The whole unit is very simple to put together. Overall, it weighs 4.4 pounds. It comes with a comfortable grip and can detect most types of metals. There are three color LED indicators and more operation modes.
Dr. Ötek Metal Detector

Dr. Ötek’s best underwater metal detector comes with a professional pinpointer that will work wonders up to 32 feet in depth. You can take it around the beach, lakes, ponds or the ocean. The 360 degree area of detection ensures a high sensitivity and can locate different types of metals with incredible precision. The detection length goes up to four inches.
Using the metal detector is fairly simple. It comes with a single-button operation. It is suitable for kids as well, and it shuts down by itself within five minutes if there is no activity detected. The LED light goes over four different levels.
Treasure Products Vibra-Tector 740

Treasure Products has specialized in metal detectors, and its Vibra-Tector 740 unit comes with a plethora of features to allow exploring the beach, surroundings of your home, ponds, lakes or even the ocean. The detector is built with waterproof materials and can be submersed into water as well – it can go into both saltwater and freshwater.
The detector runs with batteries and will let you know when they need recharging. It comes in a single design of black and yellow and weighs just under 16 ounces. It is also suitable for children.