OKM Rover C4 & Rover UC 3D Ground Scanners

OKM Rover Overview

OKM lists both Rover models in its entry-level 3D ground scanner group, and both come with a pre-configured Windows notebook with Visualizer 3D Studio for detailed analysis after the survey. OKM covers both with a 2-year guarantee.

Rover C4: a handheld control unit of about 1.5 kg (3.3 lb) with a 3.5 inch touchscreen and an integrated rechargeable battery. LEDs on the underside of the control unit can be adjusted gradually to suit your surroundings, for scanning in narrow, dark tunnels or at night. It ships with two probes. The Standard Probe, 0.4 kg (0.9 lb) and 445 mm (17.5 inch), runs 3D Ground Scan and Magnetometer. The Super Sensor, 0.9 kg (2 lb) and 960 mm (37.8 inch), runs all four modes, including Pinpointer and Mineral Scan. Both probes carry OKM's LED Orbit. OKM rates the control unit for -10 to 60 °C (14 to 140 °F) and lists it as not waterproof.

Rover UC: OKM says the UC stands for Undercover. The telescopic probe is built like a trekking pole, weighs about 500 g (17.6 oz) and folds to about 67 cm (26 inch). An Android smartwatch with the OKM app is the control unit and shows scan images directly, so first measurements need no computer; the same app also runs on an Android smartphone. It has three modes, Magnetometer, Pinpointer and 3D Ground Scan, with basic target discrimination between ferrous metal, non-ferrous metal and cavities, and its built-in battery runs 48 hours and charges over USB-C. The watch adds a compass, GPS you can switch off, and fitness tracking.

Rover UC vs Rover C4: Which Should You Buy?

When a customer calls about the OKM Rover, we start with one question: will you be walking in with the scanner in plain view, or not? If you need to search without drawing attention and want the lightest kit, the Rover UC is the one, as long as three modes and a watch screen are enough. Bluetooth headphones connected to the watch keep the signals private, and vibration can be switched on in the app. If carrying a visible instrument is no problem, the Rover C4 gives you the touchscreen on the unit, the second probe and Mineral Scan, and OKM's customer-find depth of 25 m (82 ft) against 20 m (65 ft) for the Rover UC.

Rover C4, Best For:

• Searchers who want results on a screen on the unit, with a choice of light or high-resolution probe
• Gold prospectors who want Mineral Scan to look for natural gold deposits
• Reading metals and voids at a glance, with the LED Orbit lighting up as you scan

Rover UC, Best For:

• Searching without drawing attention, with the probe carried as a trekking pole
• Hikers who want the lightest OKM 3D scanner in the pack

Key Features in the Field

The LED Orbit on the Rover C4 probes is a ring of lights that shows detected metals and voids in different colors as you scan, and OKM says the Super Sensor gives higher resolution 3D scan images than the Standard Probe. On the Rover UC, OKM says the sensors respond more sensitively as you extend the pole. Both are quick reads in the field; the 3D image in Visualizer 3D Studio is where you judge an anomaly's size and depth.

OKM gives Rover depths as objects its customers have found, not as a tested specification, and those figures apply to large objects and voids. Small targets such as coins show at far shallower depths, and soil, target size and scan technique all change the result. Our guide How Deep Do Metal Detectors Go? explains why.

Where the Rover Works Best and Its Limits

OKM lists jewelry, coins, artifacts, chests, chambers, graves and tunnels among what the Rover UC can detect, and Mineral Scan on the Rover C4 is a deposit-search mode, not a nugget detector. For small nuggets near the surface, a dedicated machine from our gold detectors is the better tool. Plan Rover scans for dry weather. If you want a VLF search coil built into the scanner, compare the Evolution NTX in the table below; for wide open areas, the eXp 5500 scans with up to five sensors at once. For non-metal structures, the OKM Gepard GPR uses ground-penetrating radar.

Probes and Accessories

Rover probes are OKM's own sensors, and the Rover has no conventional search coil, so coils and coil covers made for other detectors do not apply. The Rover UC and Rover C4 do not share probes: the Standard Probe and Super Sensor belong to the Rover C4. OKM's Rover C4 kit holds the control unit, both probes with LED Orbit, a pre-configured Windows notebook, a USB flash drive with Visualizer 3D Studio Standard Edition, Bluetooth headphones, a charger, a travel adapter set, a protector tube, a waterproof and shock-resistant protector case and a quick start guide. For digging on a scanned target, a pinpointer such as the OKM Fortuna XELA narrows the hole.

Compare OKM 3D Ground Scanners

OKM gives most of these depths as objects its customers have found; they apply to large objects and voids, not coins.

Why Buy the OKM Rover from Serious Detecting?

• Free Shipping on Orders Over $99: Your OKM Rover ships at no extra cost across the continental US.
• Authorized OKM Dealer: Showroom in Ypsilanti, Michigan, full 2-year manufacturer warranty and product registration support.
• Help Before and After You Buy: Our staff answer setup, software, probe and Rover questions by phone or email.