The rugged cavalry 10x50 binocular is fully waterproof and nitrogen purged to prevent internal fogging the housing is protected by durable rubber armor making the binoculars easy to grip while protecting them from hard use the olive drab color offers concealment in the fieldas an optical instrument cavalry offers professional features including high grade bak 4 prisms and fully multi coated optics for superb light transmission with large 50mm objective lenses the cavalry 10x50 is a usefu