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F70 FISHER Fisher f70 is the latest market innovations proposed by Fisher Labs. Fisher f70 is a metal detector multifunction, suitable for searching for coins and "wrecks" but also small gold objects. Fisher f70 is a metal detector equipped with a large digital display that provides various information on the type of metal detected. With the menu you can change various parameters, such as sensitivity, audio threshold and discrimination. f70 uses the double filter system to discrimination, noting more easily gold and distinguishing the unwanted metals.