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 and a built-in weaver-type mount for installation on weaver or picatinny-type rails.Battery: CR2032Magnification: 1xObjective: 24mm x 34mmField Of View: 15.7 m @ 100 mEye Relief: UnlimitedDot Size: 3 MOALength: 3.20"Weight: 5.30 ozFinish: Black AnodizedReticle: 3 MOA Red Dot/ Multi ReticleAdjustment Size: 1 MOAProofs: Shock/WaterproofOptic Coating: RubyWindage Elevation: Adjustable