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engineered
Standard single-frequency detectors make a trade-off: low frequencies reach depth and handle high-conductivity targets well but lose sensitivity to small and low-conductivity objects
non-interchangeable)
Notch Discrimination- Modify discrimination patterns based on what you are seeking
preserving accurate target IDs so you can confidently differentiate deep silver jewelry from buried iron debris
Fisher CZ-21 Metal Detector with 8" Concentric Waterproof Search Coil (Open Box) at-series engineeredOpen Box Demo CZ 21 Metal Detector with 8 Concentric Waterproof Search Coil, Submersible Headphones, Two Year Warranty. This Versatile, Waterproof metal detector is Submersible up to 250 feet and features Dual Frequency Fourier Domain Signal Analysis, Easy Manual Ground Balance, High Performance in Mineralized Soil, All Metal Auto Tune Mode, 3 Tone Audio Target ID, The Fisher CZ 21 is ideal for Beach Hunting, Shallow Water, Lake Surf, and even Diving.
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