Ncstar red dot sight is constructed of an anodized aluminum body.It features an led that is 100% safe for the eyes, unlimited eye relief and field of view, a standard on/off switch and an integrated weaver-style mount.This sight comes with a lens cover, mounting tool and battery.Battery: CR2032Magnification: 1xObjective: 23.5mm x 16.8mmField Of View: UnlimitedEye Relief: UnlimitedDot Size: 2 MOALength: 1.80"Weight: 1.30 ozFinish: Black AnodizedReticle: 2 MOA Red DotAdjustment Size: 1 MOAProofs: Weather ResistantOptic Coating: RubyWindage Elevation: Adjustable