1. Ground gold detector for long range; 2. Gold, Silver, Copper, Tin, P.G, Aluminum, Jewel detector; 3. Forward Gauss Tech. VR1000B ... -II LONG RANGE KING Ground Metal Detector Detailed ... common frequencies are Gold, Silver, Copper, P.G, Tin, Aluminum and Jewel.(3) Detecting Range: 100-1000m (4) Detecting Depth: 5- ...