Best Use for Birder, Game Watching , Wild View, For Mountainer ,Tower Viewing and and for General Purpose. Dielectric high-reflective multilayer prism coating ensures superior transmittance uniformity across the visible range, resulting in brighter images and more natural colours. All lenses and prisms are multilayer-coated for brighter images. Waterproof and fog-free with nitrogen gas. Rubber armouring for shock resistance and a firm, comfortable grip. Lightweight body.