This 15" DD coil gives a huge depth advantage over the 11"
especially when used with the boost or cache modes. The depth is incredible letting you see that deep virgin ground that is out of reach for all other detectors. The DD configuration and speed of the Fishers still gives excellent separation for a coil this size. All Fisher search coils are electrostatically shielded and waterproof, plus all Fisher accessories purchased separately (including coils) carry a 90 day warranty
from the factory.