... 1.Detect Rock Gold, Sand Gold, Silver, Bronze, Brass, Precious Stone. 2. Detecting Depth: 100-1000m VR LONG RANGE KING Introduction:VR ... upgraded version. VR Metal Detector System: The VR Ultrasonic Long Range King is an advanced Metal Detector System utilizing advanced ... and the transmitter.(2) Most common frequencies are Rock Gold, Sand Gold, Silver, Bronze, Brass, and Precious Stone.(3) Detecting ...