The Red Four Reticle Reflex Optic by NcStar features reticle choices of dot, bullseye, cross and starburst. The LED is 100% safe for the eyes and there is unlimited eye relief for flexible mounting. The rheostat knob allows the user to choose from 7 brightness settings. This optic features a black anodized aluminum body, a rubber lens cover, heads up display and a built-in Weaver-type mount for installation on Weaver or Picatinny-type rails.
Specifications:

Magnification	1x
Objective	24x34mm
Field of View	15.7 m @ 100 m
Eye Relief	Unlimited
Dot Size	3 MOA
Tube Diameter
Length	3.10"
Weight	4.30 oz
Finish	Black Anodized
Battery	CR2032 Lithium
Reticle	Illuminated Red 4 Pattern
Adjustment Size	1 MOA
Proofs	Waterproof, Shockproof
Optic Coating	Ruby
Windage Elevation	1 MOA