The Bushnell H20 12x42 mm BaK-4 Porro Prism Binocular brings the selected target, identified by scanning the wide field, in-close for the kind of detailed observation possible with a high 12x magnification. The 61deg. wide AAoV delivers the ability to scan large swaths of ocean or riverbank miles. This binocular is a very practical and useful optic, whether for the river man or ocean-going sailor. If inclement weather is a concern, the nitrogen purged fogproofing and o-ring sealed waterproofing will alleviate those worries. The blue, rubber armoring has even been shaped with soft textured ridges to help make them slip-proof when wet.