Fisher CZ-21 Quick Silver

The Fisher CZ-21 Quick Silver is a professional-grade underwater metal detector engineered for reliable performance in saltwater, wet sand, and fully submerged environments. Built on Fisher’s proven dual-frequency VLF platform, the CZ-21 maintains stability and depth where many standard detectors become unstable.

Operating on 5 kHz and 15 kHz simultaneously, the detector provides a balanced response to both low- and high-conductive targets, making it suitable for coins, jewellery, and relics in beach and underwater conditions. Its advanced ground handling minimizes interference from saltwater mineralization, allowing accurate target detection and discrimination.

The detector features a fully sealed waterproof housing, enabling operation on land, beaches, shallow water, and deep underwater environments. The control interface is designed for tactile use, making it practical for divers and waders wearing gloves.

The CZ-21 Quick Silver is intended for experienced detectorists and professional users who require dependable underwater performance and consistent detection in challenging conditions.

What’s Included in the Set

• Fisher CZ-21 Quick Silver control unit

• 27 cm / 10.5″ waterproof search coil (factory-fitted)

• Shaft and armrest assembly

• Hardwired waterproof headphones

• Mounting hardware and accessories

• User documentation

System Highlights

Dual-Frequency Detection Platform

• Simultaneous 5 kHz and 15 kHz operation

• Balanced sensitivity to a wide range of target types

• Stable performance in saltwater and mineralized ground

Underwater & Beach Optimized

• Fully waterproof construction

• Reliable operation on dry sand, wet sand, and underwater

• Designed for diving, wading, and surf detecting

Professional Discrimination

• Accurate ferrous / non-ferrous discrimination

• Clear audio response for target identification

• Reduced false signals in saltwater environments

Use Case Positioning

• Underwater detecting

• Beach and surf searching

• Saltwater environments

• Coin, jewellery, and relic recovery

• Professional and advanced hobbyist use

Technical Specifications (Summary Table)

Important Usage Notes

• Designed primarily for underwater and beach use

• Not intended for trash-dense park environments

• Best performance achieved with controlled sweep speed

• Hardwired headphones are required for underwater operation