13" Metal Detector for Adults Professional, Double-D Waterproof Search Coil Gold Finder with Pinpoint, High Sensitivity DISC Mode, LCD Backlight Display Gold Detector

13" WATERPROOF DD COIL - In general, the electromagnetic pulses from larger coils can penetrate more deeply than those from smaller coils. And larger coils also help you cover ground more quickly since every sweep of the detector goes over a larger area. The coil is a “double D”. Double D coils produce a wide electromagnetic field, again permitting more ground to be covered in a given amount of time. That can allow more precise pinpointing of the location of a find.. 3 PROFESSIONAL SEARCH WAYS -