The GR-3 is a ground-scanning device that transmits readings via Bluetooth to a companion app (Android and iOS), displaying data in real time on a phone or tablet. It uses a single high-precision sensor (the GR-3 Plus adds a second sensor for higher-resolution data).
Manufacturer-Stated Specifications
Maximum depth: Manufacturer states up to 7 metres, depending on target size and soil type
Stated detectable targets: Magnetic metals (iron, steel) and non-magnetic metals (gold, silver, copper), plus cavities such as tombs, rooms, and tunnels, per the manufacturer
Scanning modes: Automatic and manual 3D ground scan, live scan, pinpointer function
Usable on: Sandy, rocky, and clay soil types
App language support: 25 languages including English, German, Spanish, French, and others
Charging: 5V Micro-USB, compatible with portable power banks
What This Device Is — and Isn't
This is a specialized, technique-dependent tool, not a point-and-find detector. Results depend on correct technique, consistent handling, and site conditions.
We'll say this plainly: this category of ground-scanning device is debated within the metal detecting and treasure-hunting community, and results can vary significantly by operator, technique, and site conditions. We're not going to oversell what it can do. If you're considering one of these, we'd rather you go in with realistic expectations than a disappointed first outing.
Package Contents
Device main unit
5V charging adapter and cable
Carrying case
User manual
Warranty certificate
Considering this device or want to talk through whether it fits what you're trying to do? Call or text us at 1-888-331-2256 before you buy — we'd rather give you a straight answer than a sale you're not ready for.
