MWF SPARK Long Range Metal DetectorIn Stock. Ready to Ship!! MWF SPARK Geolocator Metal Detector Depth: 10 meters Distance: 200 square meters Gold & Treasures Detector Spark 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 Spark offers the high rigor frequency waves that enable it to identify and detection the target sites underground, like a gold, treasures and