Fisher CZ-21

fisherlab.com

A dual frequency design from Fisher Research Labs that has outlived several generations of rivals. It transmits 5 kHz and 15 kHz together, giving a Fisher trademark: clean, confident audio on wet salt sand with a simple three tone breakdown of iron, mid range and high conductors. The case is rated to 76 metres, the coil options are 8 and 10.5 inch, and the whole thing runs on eight AA cells, which is a real argument on a week long trip far from a socket.

Good for hunters who value predictable behaviour over features and want a machine that a teenager can learn in an afternoon. The display is minimal by modern standards, there is no wireless anything, and the balance feels dated next to a carbon shaft flagship. Weight and old style connectors are the price of a design that keeps working.

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