OKM Metal Detectors & Ground Scanners

OKM is a German manufacturer of professional 3D ground scanners and deep-seeking metal detectors, built for treasure hunters, archaeologists, and surveyors who need to locate and image targets far below the reach of a conventional detector. Serious Detecting is an authorized US dealer for the full OKM range, from the eXp and Fusion 3D-imaging scanners to the Rover series, the Gepard ground-penetrating radar, and the GeoSeeker water and cavity detector.

About OKM Metal Detectors and Ground Scanners

OKM (based in Germany) builds some of the most capable subsurface-detection equipment available to civilians. Rather than swinging a coil for shallow targets, OKM detectors scan a measured grid and render the results as a three-dimensional image, letting you estimate a target's depth, size, and shape before you dig. The lineup spans entry-level scanners through professional multi-sensor systems and true ground-penetrating radar, all aimed at depth and pre-excavation imaging that ordinary metal detectors can't deliver. For deep caches, buried structures, archaeology, and groundwater, OKM is one of the most recognized names in the field.

The OKM Range

OKM organizes its lineup into clear categories, and matching the right one to your goal is the whole game:

Entry-Level 3D Ground Scanners: Fusion Light, Evolution NTX, Rover UC, and Rover C4: portable 3D imaging scanners that locate and map buried targets to roughly 65–82 feet, ideal for hunters moving into deep-seeking detection.

Advanced 3D Ground Scanners: Fusion Pro, Fusion Pro Plus, eXp 5500 Pro, and the new eXp 7000 Pro Plus: multi-sensor flagship systems that add scan modes, larger sensors, and the deepest, most detailed 3D imaging OKM makes.

Ground Radar: the Gepard GPR 3D uses true ground-penetrating radar to profile large targets and voids at extreme depth.

Water Detectors: the GeoSeeker and GeoSeeker Mini are geoelectric instruments that locate groundwater, cavities, and tunnels by soil resistivity, not metal.

Metal Detectors: OKM also builds a conventional OKM metal detector line, the Pulse Nova and Fortuna Xela, for gold and general detecting. Tell us your target and terrain and we'll point you to the right OKM category.

OKM FAQs

Are OKM detectors any good?

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, the right tool when your targets are deep caches, structures, voids, or water rather than surface coins and relics.

What is the best OKM detector?

It 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. Tell us your application and we'll recommend the right model rather than simply the most expensive.

How deep do OKM ground scanners go?

It varies by model and target size. The Rover scanners reach roughly 65–82 feet on suitable targets, and the Gepard GPR reaches even greater depth on larger objects and voids. Actual reach always depends on target size, ground conditions, and technique.

Is Serious Detecting an authorized OKM dealer?

Yes. We're an authorized US dealer for OKM, so every unit ships new with the full manufacturer warranty and genuine support, and our team can advise on model choice, depth expectations, and getting started.

Why Buy OKM from Serious Detecting

OKM systems are a serious investment, so buying from an authorized dealer who knows them matters. As an authorized US dealer, Serious Detecting supplies every OKM scanner brand-new with the full manufacturer warranty. These high-value systems ship factory-direct, and our team coordinates your order, warranty, and setup from first question to delivery. We'll walk you through technology and model choices before you commit. Browse the full cross-brand range of 3D ground scanners, or contact us for a recommendation.

Customer Questions & Expert Answers

Get real answers from outdoor explorers and our product experts. Browse questions about performance, features, and setup —or ask your own to make sure this gear fits your next adventure.

What is an OKM 3D ground scanner and how is it different from a metal detector?

An OKM 3D ground scanner creates a visual subsurface map showing the shape, size, depth, and position of buried objects — unlike a conventional metal detector that produces an audio signal indicating something is present. Where a metal detector tells you "there is something here," an OKM system tells you what it looks like and whether it is worth excavating. This is the technology used by serious treasure hunters and archaeologists who 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.

Answered by Dan P. · April 2026

What depth do OKM ground scanners reach?

OKM systems cover a wide range: the Fusion series varies by model, the Rover UC reaches 65 feet, the Rover C4 reaches 82 feet. The Gepard GPR depth depends on ground conditions and target type. These depths significantly exceed any conventional metal detector - the Minelab GPX 6000 pulse induction machine, 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.

Answered by John W. · April 2026

Is the OKM Fusion a good metal detector for beginners?

OKM systems are professional instruments priced and designed for serious researchers, archaeologists, and professional treasure hunters - not beginner metal detectorists. The price, complexity, and specific use cases make them inappropriate as a starting point for the hobby. For beginners, conventional machines starting at the Garrett ACE 400 or Nokta Simplex Ultra are the right entry point. OKM instruments are the right tool for specific professional applications that have already exhausted conventional detecting approaches. See beginner metal detectors.

Answered by Richard T. · April 2026

Can OKM systems find non-metal objects?

Yes — the OKM Gepard GPR (ground-penetrating radar) maps all buried anomalies regardless of material, including non-metal structures, voids, foundations, and objects that conventional metal detectors cannot detect. The 3D scanning systems in the Fusion and Rover series primarily detect conductive and ferrous materials, similar to conventional metal detectors but with visual mapping capability. The Gepard is the system specifically for non-metal target detection and is used in archaeological survey and engineering applications.

Answered by Dan P. · April 2026