From the manufacturer

Bushnell Banner Dusk & Dawn Multi-X Reticle Adjustable Objective Riflescope

Product Description

The 18x magnification and large 50mm objective make it ideal for long-range varmint, silhouette and target shooting. Features the Multi-X reticle, which offers a classic sight picture.

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
Argon Purged Fog-Proofing - Argon-filled optics remain stable regardless of ambient temperature for the ultimate fog-proof protection.

Ask any trophy hunter. They'll tell you more tags are filled in the low-light hours than any other time. Enter the Bushnell Banner 4-12x 40 Multi-X riflescope, a scope designed to excel in early-morning and late-evening light. Featuring Dusk & Dawn Brightness (DDB) multi-coated lenses for clarity and brightness in low light, you'll add precious minutes to every hunting day with the Banner Dusk & Dawn series. With one-piece tube design, the Banner Dusk & Dawn line includes a full assortment of specialty scopes for big-game, varmint, .22 rimfire, slug, black powder and turkey hunting.