They the company has alot of gullible people buying there product, Most of these so called detectors are just a plastic box, with one or two crome plated radio antenas, and a place for a batter and a meter, , mounted on a handle with bearings on it so it will turn, I've seen them, I've held them, they won't find anything, .too bad Jim Straight has passed, he could set you right, Grubstake