I have a pulse star not the II, and it does not have the discrimination. I assume that you would have a magnetometer in there. I wouldnt care if it had that though, as, what if a bunch of coins, bills, were hid in a can? Often they were. Or if it was a outhouse pit? I find it very powerful, and can pick up a can at about 6' in the air. It will pick up a car at about 25' in the air. It will also pick up high power lines, the big ones, at 100s of feet away, it picks up the EMI/EMF that is put off. Very, very sensitive. But it will not find a thin ring or anything real small. Of course being a PI it can find something that is underwater or buried for a long time a lot further away, the opposite of a VLF, or TR type.