"The Athlon Optics Talos IR Shotgun Scope features fully multi-coated optics, which effectively reduce reflected light and increases the transmission of light, giving you a brighter image- in the low-light conditions of early morning or evening. This is important, because if you ask any hunter, they'll tell you they probably have filled more tags in the low-light hours than any other time. Nitrogen gas is used to purge air from the optic to help maintain internal fog-proof and waterproof capabilities. This means that regardless of how heavy the rain is coming down or an accidental drop in the water, this sealed and gas-purged optic will remain waterproof. The Talos rifle scope from Athlon Optics comes equipped with an illuminated second focal plane reticle, fully multi-coated lenses, capped elevation and windage turrets, 4X power ratio, and a strong 1"" tube. Fully multi-coated optics for bright images in low-light conditions Nitrogen gas purged for water- and fog-proof performance Capped elevation and windage turrets Illuminated reticle 4X power ratio"