Hey all. I have had my sea hunter mk2 for about 3 months,this is my first p.i. machine. The machine was simple enough to learn,and I know if I dug enough junk my'' gold day" would come. Today I found a beautiful mans 10k white gold ring, with three small diamonds. The ring must have just been lost,it was shallow and scratch free. It was still greasy with sunblock! The ring fits me perfect. I refer to my sea hunter as B.P.I. "bobby pin induction" I can dig these things at dam near a foot deep! It's nice to know the gold ring hit just as hard as the bobby pins,I was starting to wonder...... Happy Hunting.