The C-Scope CS4Pi detector was one of the very first detectors I ever purchased.
Works a treat on dry and wet salt Beachs.
The one that I used was purchased second hand from England along with another of Erics detectors, the father of PI detectors.
It worked even as I crossed back n forth from dry to wet and into the lapping waves themselves without any hickups.
Cant fault it for beach work.
Just it does not have ground balancing so doesnt do any good at all inland.
I tried several time to get Cscope to do a PI with ground balancing to no avail.
Perhaps not so good on little things, I never tested it on that.
Just used it for coins. Car keys, metal stakes, tent pegs, bottle openers, cans, usual junk in the beach.
Cheers.
Lee.