CZ3D vs F75 tones

Can anyone with CZ3D experience out there tell me about the tones of this machine? Is it limited to a few tiers of discrete tones? Or, does it have a continuous tone option, much like the Delta Pitch option on the F75? I'm thinking about a CZ3D as a complement to my F75, but I want to be able to tell the difference in tones between a zinc penny and a copper penny. Thanks in advance. - Jim

Four very discrete tones. Simple and intelligent. Coins, including zinc cents, all register as a high tone. And the CZ-3D does not have a DP Delta Pitch like the F-75's & upper-end Minelab's.