The Vortex Sonora redefines what a rifle scope can do. The Sonora combines fully multi-coated lenses for a clear sight picture with generous eye relief. The Sonora also features a hard-anodized, single-piece, aircraft-grade aluminum tube that is nitrogen purged and O-ring sealed that delivers a waterproof, fogproof, weatherproof performance no matter the weather.Features: Anti-reflective lens coatings increase light transmission for greater clarity Gas purged and o-ring sealed delivering waterproof and fogproof performance Waterproof performance designed to withstand harsh weather conditions The shockproof, rugged construction withstands the highest levels of recoil and impactVortex Sonora 4-12x44 Riflescope w/ Dead-Hold BDC Reticle - SON-412 Brand: Vortex Model: Sonora 4-12x44 Reticle: Dead-Hold BDC Tube Size: 1" Length: 13.5" Weight: 15.8 oz. Eye Relief: 4" Field of View: 24.7'-8.4' @ 100 Yard Adjustment: 1/4 MOA Travel Per Rotation: 15 MOA Total Windage Travel: 60 MOA Total Elevation Travel: 60 MOA