Designed to be air tight, so moisture stays out even when submerged in water. Designed to be air tight, so moisture stays out even when submerged in water. Black with Straight eyepiece Waterproof Construction - O-ring sealed optics stay dry inside, even when totally immersed in water. Fully Multi Coated - Multiple layers of anti-reflective coating on all air-to-glass surfaces deliver bright, high-contrast images. Bushnell Sentry 18-36x50mm Black Spotting Scope w/Case and Tripod 783618