Fisher CZ-21

The CZ-21 is a serious underwater machine, submersible to 250 feet and running Fisher's dual-frequency circuitry, which is what gives it both depth on high-conductivity targets like silver and enough sensitivity for gold jewelry. Its target separation in salt is what keeps divers and surf hunters loyal to it. Simple controls, no menus to navigate with gloves on, and a build intended for years of saltwater use rather than occasional paddling.