Xiutantxmd

14 inch Adult Depth Metal Detector Professional, Dual D Waterproof Search Coil with Needle tip, high Sensitivity DISC Mode, LCD Backlight Display Gold Detector, Including Positioning Rod 28CM waterproof DD coil – Generally speaking, electromagnetic pulses from larger coils can penetrate deeper than those from smaller coils. A larger coil can also help you cover the ground faster, as each scan of the detector will cover a larger area. The coil is a "double D" coil. The dual D coils generate a broad electromagnetic field, allowing for more coverage of the ground within a given time. This can more accurately...