Nikon’s Patent Pending BDC Predator Hunting Reticle Utilizes ballistic circles with carefully researched spacing that is designed around the needs of predator hunters. Unique, open circle design doesn’t obscure target, making shots on a moving coyote simple. ARD (Anti Reflective Device) Technology Eliminates game spooking glare. Nikon Multicoated Lenses Provide up to 92% light transmission and maximum brightness from dawn to dusk. Precise Hand-turn 1/4 –MOA Click Adjustments Easy-to-use positive click reticle adjustments get you zeroed in quicker and maintain your setting—even with heavy recoil. Generous Eye Relief For easy sighting in difficult shooting positions. Quick Focus Eyepiece Allows the shooter to instantly bring the reticle into sharp focus. Waterproof/Fogproof Nitrogen filled and O-ring sealed.