The burris fullfield iv offers a wide field of view in a rugged, lightweight design.Features an illuminated e3 moa reticle, 1" main tube and finger adjustable windage/elevation turrets. Adj Size: .25 MOA Magnification: 2.5-10x Objective: 42mm Field Of View: 11 - 46 ft @ 100 yds Eye Relief: 3.50" - 3.80" Tube Diameter: 1" Length: 11.60" Weight: 18.40 oz Reticle: Illuminated Ballistic E3 Proofs: Fog/Shock/Waterproof Optic Coating: Hi-Lume