Incorporating Extra-low Dispersion (ED) glass elements for optimum optical resolution.
Large 80mm objective lenses for bright viewing under all light conditions.
The receptacle has a special "O" ring assembly, which allows the body of the scope to be filled with nitrogen, making it fog proof and JIS Class 6 waterproof.
A built-in lens shade cuts excessive light and helps to prevent rain and other weather elements from interfering with viewing.