MWF GF 500 Long Range Diamond DetectorMWF GF 500 Long Range Diamond Detector Depth: 10 meters Distance: 200 square meters Diamond & Gems Detector GF 500 device works on the long distance sensing system (LDS), the advanced and built in with acoustic identification systems to locate the path and point center of target. The GF 500 offers the high rigor frequency waves that enable it to identify and detection the target location underground, like a diamonds and gemstones meticulously where