Leupold VX-1 3-9x40mm Compact Waterproof Fogproof Riflescope, Matte Black A versatile 3:1 zoom ratio erector system that is ideal for virtually any situation. 1/4 MOA precision finger click adjustments for windage and elevation offer absolute repeatability and dependability over a lifetime of extreme use. Absolute waterproof and fog proof integrity  each is ready for a lifetime in the field, in all conditions. The Multicoat 4 lens system delivers extreme clarity from edge to edge of the visual field, outstanding contrast, and a bright sight picture even in extreme low-light conditions. Made with Leupold's Proprietary nitrogen sealing process, which has become the industry standard. Rugged and absolutely waterproof.