Found one of these and bought it just to play around with. I have a couple of the RS detectors. Just to mess around
with. I found my Horseshoe that was missing for 1 1/2 years with it. Found other junk, washers, aluminum and trash.
I experimented with the Radio Shack and Chinese detectors to get a idea of whats going on inside the box. They needed adjusted constantly and they beeped on everything a coin size. If you love bottle caps, thats the detector to find them. I had analog which I thought wa cool. The arm goes one way it ferrous, if it goes the other way its non ferrous.