The latest GOLD DETECTOR, the newest version of Geo Ground, works with imaging systems and long-range sensor systems, reaching an underground search depth of 40 meters and a front range of up to 3000 meters on the earth's surface. The Gold Vision device works with 6 different search systems, which are: 1_ Three-dimensional ground scanning system 2_ long range scanning system 3_ Fr... https://www.gold-master.com/en/