The Engage DX Spotting Scope features a compact 80mm objective with dielectric coated prism for higher contrast and resolution. It is built with durable aluminum chassis and rubber armour to create a strong body that protects the optical system along with fully multi-coated optics to provide a brighter and clearer image at dusk and dawn. The EXO Barrier bond to the exterior lens surfaces and repels water, oil, fog, dust and debris making the target clear.