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the audio boost amplifies those faint signals
We run All-Metal with Sensitivity at 7 to 9
the focused detection field gives sharper audio on coins and jewelry in the 0-6 inch range
Thick gauge steel with a hard plastic grip handle
Mars Discovery 13” DD Waterproof Coil for Makro Coin Finder CF77 Metal Detector waterproof metal detector the audio boost amplifies thoseMars Discovery 13 DD Search Coil with Nut & Bolt, Coil Cover, 2 Rubber Rings, and a Two Year Warranty. Compatible with the Makro Coin Finder CF77 Metal Detector. The Mars Discovery coil is the most optimal size for universal detecting at 13. It is a very well balanced, lightweight and reliable coil for a wide range of search tasks. It detects targets at considerably greater depth and provides a larger scan area in comparison to standard coils. Mars
