Feature Edge-to-Edge Image without Inside Dark Ring Around Image, 3.8in Long Eye Relief30mm Monotube Made of 6061 T6, 1/2 MOA Capped Adjustment, Power Lever MountFully-multi Coated, Wide Field of View, Red & Green Illumination, with Flip-up CapsEtched Glass Illuminated BDC Crossbow Reticle w/ Digital Lines & Dots, 300-475 FPS Specification A Magnification: 2-5x A Objective Lens Dia: 24mm A Ocular Lens Dia: 36mm / 1.4 inch A Ocular Lens Length: 60mm / 2.4 inch A Exit Pupil: 10.7-4.8mm A Optics Coating: Fully multi coated A Field of View: 63.7-25.5 feet@ 100 yards A Eye Relief: 96mm / 3.8in A Length: 248mm / 9.8in A Weight: 380g / 13.4oz A Tube Dia: 30mm A Click Value: 1/2MOA A Adjustment Range: >60MOA A Parallax Setting: 30 yards A Reticle: Etched glass VCB-CDO A Illumination: 5 levels red & green A Battery Type: CR2032 A Finish: Black matte A Shock tested to 750g, water resistant IPX4 A Fully nitrogen purged to eliminate any fogging of the lenses internally A Capped adjustment with zero re-set feature A High quality 6061 T6 aircraft grade aluminum A Diopter compensation from fast-focus eyepiece (+2 to -2) A Including items: power ring lever mount, 30mm weaver low rings (default) or dovetail rings, flip-up caps and cleaning cloth etc. Reticle