Made in Germany   Made in Germany   Detection Technologies since 1998

Metal detector, Treasure detector and 3D ground scanner Rover C4

We improved the metal detection technology of the Rover Series and created the Rover C4. With this metal detector and 3d ground scanner we simplify your treasure hunting experience. We combined three former OKM detectors (Rover C, Rover C II and Rover Gold) into Rover C4.

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This treasure detector is easy to handle via touch screen. It can detect lost treasures (coins, rings, jewelry etc.) as well as void structures (tunnels, caves, chambers, sepulchers etc.). The detector is also equipped with an innovative LED orbit, that indicates underground targets visually. While scanning the ground this LED sphere emits colored light to visualize detected metals and cavities.

Rover C4 with LED orbit
Rover C4 metal detector with LED orbit
The Rover C4 ground scanner with innovative LED orbit is the perfect tool for treasure hunters. The color LEDs visualize existing underground treasures immediately.
Simple operation via touch screen
Simple touch screen operation
The Rover C4 is operated via touch screen. Alternative hardware buttons can also be used to select options and operating modes.

Additional features of the Rover C4 are:

  • Supported operating modes: Ground Scan, Pin Pointer, Mineral Scan, Magnetometer
  • Graphical user interface in many different languages
  • Operational touch screen with alternative hardware buttons
  • Multilevel LED lighting to operate the detector in dark environments
  • Wireless data transfer
  • 4 separated memory areas to store recorded measuring data
  • Standard Probe and Super Sensor with innovative LED orbit
Rover C4 gold detector in different colors (dark green, anthracite, blue)
Gold detector Rover C4 - Color variants
OKM's gold detector Rover C4 is also available in different colors. You decide in what color you like to get your OKM metal detector.

Ground scanning with metal detector Rover C4

One of the most versatile operating modes in our 3d metal detectors is Ground Scan. This function is used to scan a rectangular area to obtain measuring data from underground structures and objects.

Treasure detector packed in pelican case
Well packed treasure detector
The Rover C4 treasure detector is well packed in a strong Pelican case for any outdoor treasure hunting.
Ground scanning with Rover C4
Ground scanning with Rover C4
By walking over an unknown area and recording scan data, the treasure hunter can detect underground treasures and buried artifacts.

Detectable items that can be found with our 3d ground scanner Rover C4 are:

  • Lost treasures and hidden precious metals
    treasure chests, gold coins, jewelry, silverware, statues, general valuables, buttons, medals, ...
  • Underground voids and cavities
    tunnels, graves, chambers, cellars, sepulchers, dugouts, shelters, bunkers, ...
  • Natural gold minerals
    gold ore, gold deposits, gold veins, ...

By walking over the field in a certain manner (Parallel or Zig-Zag) the treasure hunter scans the area of interest. With all recorded data the Visualizer 3D software creates a 3d image that represents all detected underground objects. Thus you know where and how deep the located treasures are in the ground.

3D data analysis with Visualizer 3D software

All data that has been recorded with the Rover C4 metal detector during a ground scan or mineral scan can be transferred to the Visualizer 3D software to process a detailed three-dimensional analysis.

Data analysis
Data analysis with Visualizer 3D software
After conducting a ground scan, simply transfer the recorded data to OKM's proprietary Visualizer 3D software.
Position and depth determination
Determine position and depth
The Visualizer 3D software is capable to determine position, depth and dimensions of buried artifacts.

During this analysis you can

  • Identify potential objects and hidden treasures
    You will see the targets represented by different colors. The color information will tell you if it is a ferrous metal (iron, steel, ...), precious metal (gold, silver, bronze, copper, ...) or a void structure (cave, tunnel, grave, chamber, ...).
  • Determine position and depth
    The software shows the position of the detected anomalies and - according to the chosen soil - how deep the target is buried in the ground.
  • Calculate object dimensions
    Next to the depth information Visualizer 3D can also calculate the dimensions of hidden targets and buried items.

With all those information the treasure hunter can easily recover lost treasures, hidden artifacts or ancient items. Contact our support team to get more information about the Rover C4 metal detector.

Certification Labels
Made in Germany

Made in Germany

Wireless data transmission

Wireless data transmission

Compliance with CE policies

Compliance with CE policies

  Rover C4 - User's Manual (English)
  Rover C4 - Leaflet (EN, DE, FR, ES)

File: RoverC4_Leaflet.pdf
Size: 940.11 KB

In the following table you can see the complete delivery contents and all optional accessories. The used symbols have the following signification:

x times includedx = x times included
not included = not included
optional available, only for additional charge = optional available, only for additional charge
DescriptionRover C4
3D software ( "Visualizer 3D" )Yes1
Carrying tubeYes1
Control unitYes1
Power Pack incl. charger and travel adapterYes1
Standard Probe with LED orbitYes1
Super Sensor with LED orbitYes1
USB bluetooth dongleYes1
Waterproof and shock resistant Peli caseYes1
Windows Tablet PCYes1
Wireless headphones (Bluetooth)Yes1

The following technical indications are medial values. During operation small variations are quite possible.

Control unit

Dimensions (H x W x D)
390 x 300 x 140 mm
about 1.5 kg
Input voltage (max.)
11 - 13 VDC, 6 W
Processor / Main CPU
Cortex M3, 32 MHz
Processor / Slave CPU
Cortex M0, 24 MHz
3.5” Resistive touch, 480 x 320 Pixel
Display CPU
Cortex M3, 32 MHz, 128 KB RAM
Data memory
4 GB
Sample rate
1024 values / second
Measurement resolution
16 bit
Operating temperature
-10 – 60 °C
Storage temperature
-20 – 70 °C
Internal speaker / Bluetooth
Air humidity
5 % – 75 %

Standard Probe

445 mm
Diameter, Shaft / LED Orbit
35 mm / 65 mm
0.4 kg
Sensor technology

Super Sensor

960 mm
Diameter, Shaft / LED Orbit
50 mm / 65 mm
0.9 kg
Sensor technology

Data transmission (Bluetooth)

2.4 – 2.4835 GHz
Maximum Transfer Rate
1 Mbps
Receiving Sensitivity
-85 dBm
Maximum Range
approx. 100 m

Computer, minimum requirements

CD-ROM drive
minimum 4x
Interface (Data transmission)
Free disk space
minimum 50 MB
Working memory (RAM)
minimum 256 MB
Graphic card
minimum 128 MB, OpenGL-compatible
minimum 1.2 GHz
Operating system
Windows Vista, Windows 7, Windows 8, Windows 10

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