The CM-011 is the single-speed variant

This replacement armrest fits the following Nokta metal detectors:

Saltwater beaches demand a coil that stays stable in mineralized wet sand and handles submersion when waves wash over it

Waterproof Rating: Coils submersible

the control housing is rainproof (not for submersion)

Mars Discovery 13” DD Waterproof Coil for Whites Coinmaster Metal Detector 9.5x5 coil The CM-011 is the single-speedMars Discovery 13 DD Search Coil with Nut & Bolt, Coil Cover, 2 Rubber Rings, and a Two Year Warranty. 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. Compatible with the Whites Coinmaster Metal Detector. The Mars Discovery coil is the most optimal size for universal detecting at 13. It is a very well balanced, lightweight and