Dual-control ground balance for variable mineralization: independent adjustment handles soil changes without losing target sensitivity

The dual controls give you more tuning range than single-knob systems

it reads well in daylight and open-shade conditions

Battery life: 10 hours continuous use

High-frequency operation prioritizes sensitivity to small targets

Fisher F44 Metal Detector with 11" Concentric Elliptical Waterproof Search Coil (Open Box) mineralized-soil Dual-control ground balance for variableOpen Box Fisher F44 Metal Detector with 11 Concentric Elliptical Waterproof Search Coil, Five Year Warranty. The F44 features Adjustable Iron Audio, Computerized & Manual Ground Balancing, 9 Segment Visual Target ID, 5 Modes of Operation, Pinpoint, 20 Levels of Adjustable Sensitivity, and 4 Tone Audio ID. This Weatherproof, Lightweight, Multi Purpose detector is ideal for Inclement Weather Hunting, Beach Hunting, Coin Shooting, Jewelry Hunting, and