Fisher CZ21 Underwater Multi-Frequency Metal Detector

The CZ-21 QuickSilver by Fisher® Research Labs is a trusted and reliable metal detector, known for its robust design and exceptional performance in both land and underwater treasure hunting. Built to withstand the toughest conditions, the CZ-21 is submersible up to 250 feet, making it ideal for detecting valuable metals on beaches, in saltwater, and freshwater environments.  Featuring a 3-Tone Target-ID system, the CZ-21 offers clear audio distinctions for different types of metals: a low tone for iron, a mid-tone for pull tabs, foil, and most gold rings, and a high tone for U.S. coins, silver rings, and some gold rings. This allows users to easily identify and differentiate between various metal types without even looking at the display.  The detector utilizes patented Fourier domain signal analysis with two deep-seeking, ground-compensating VLF signals operating at 5 KHz and 15 KHz. This dual-frequency system provides twice as much target information for accurate analysis and identif