Brunton Eterna Highpower Camouflage Binoculars (Mossy Oak, 15 X51) Brunton's highest fixed-power binocular with 15x magnification and Mossy Oak camo 51mm objective lenses with BaK-4 prism glass and Emerald Fire multi-coating 200-foot field of view at 1,000 yards; 15mm long eye relief Waterproof and fog-proof aluminum frame; tripod/monopod compatible Measures 6.7 x 5.2 x 2.3 inches (WxHxD) and weighs 32 ounces; limited lifetime warranty