OKM Metal Detectors & Ground Scanners

An OKM 3D ground scanner is a subsurface imaging system that creates a visual map of the shape, size, depth, and position of buried objects, and that is how it differs from a conventional metal detector, which only gives an audio signal that something is present. Where a metal detector tells you "there is something here," an OKM system shows you what it looks like and whether it is worth excavating. This is the technology serious treasure hunters and archaeologists use when they need more information before committing to a significant excavation. Conventional metal detectors are the right tool for most treasure hunting; OKM systems are for situations requiring subsurface imaging, and you can compare them with other brands in our 3D ground scanners range.

Yes, OKM detectors are good at what they are built for: OKM is a long-established German manufacturer and one of the most recognized names in 3D ground scanning and deep-seeking detection. Their systems are built for depth and subsurface imaging well beyond a standard metal detector, which makes them the right tool when your targets are deep caches, structures, voids, or water rather than surface coins and relics. For coins and relics near the surface, a conventional metal detector is the better choice, and you can compare OKM with other brands in our 3D ground scanners range.

The best OKM detector depends on your goal: for top-end 3D imaging the eXp series is the flagship, for portable 3D scanning the Rover line, for extreme-depth radar imaging the Gepard GPR, and for water and cavities the GeoSeeker. If you are hunting gold nuggets rather than deep caches, OKM's Pulse Nova pulse induction detectors are the conventional option, and our gold detectors range covers other brands too. Tell us your application through our contact page and we'll recommend the right model rather than simply the most expensive.

How deep OKM ground scanners go depends on the model and the size of the target: the Rover UC is rated to 65 feet, the Fusion Professional Plus to 69 feet, the Rover C4 and eXp 5500 Professional to 82 feet, and the Gepard GPR ground-penetrating radar reaches even greater depth, up to 131 feet, on larger objects and voids. Actual reach always depends on target size, ground conditions, and technique. These depths far exceed any conventional metal detector; a pulse induction gold machine like the Minelab GPX 6000, for comparison, reaches practical depths measured in feet rather than dozens of feet. OKM systems are the tools for large, deeply buried objects when conventional detecting has already been applied.

Yes, OKM systems can find non-metal objects, and the Gepard GPR ground-penetrating radar is the one built for it: it maps buried anomalies regardless of material, including non-metal structures, voids, foundations, and objects that conventional metal detectors cannot detect. The 3D ground scanners in the Fusion, Rover, and eXp series are built mainly around metal targets, and their 3D Ground Scan mode also shows cavities such as tunnels and chambers, with visual mapping a conventional detector cannot provide. The GeoSeeker and GeoSeeker Mini locate groundwater and cavities by soil resistivity rather than metal. The Gepard is the OKM system specifically for non-metal target detection and is used in archaeological survey and engineering applications.

The OKM Fusion is not a good metal detector for beginners, because OKM systems are professional instruments priced and designed for serious researchers, archaeologists, and professional treasure hunters rather than people new to the hobby. Their price, complexity, and specific use cases make them the wrong starting point. For beginners, conventional machines such as the Garrett ACE 400 or Nokta Simplex Ultra are the right entry point, and you can compare more options among our beginner metal detectors. OKM instruments are the right tool for specific professional applications that have already exhausted conventional detecting approaches.

Yes, Serious Detecting is an authorized US dealer for OKM, so every unit ships new with the full manufacturer warranty and genuine support. Our team can advise on model choice, depth expectations, and getting started, so contact us before you buy, see the other manufacturers we carry on our brands page, or read what customers say in our reviews.