This 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 an extra battery.The ddab is powered by cr2032 3v lithium batteries.Battery: CR2032Magnification: 1xObjective: 23.5x16.8mmField Of View: UnlimitedEye Relief: UnlimitedDot Size: 2 MOALength: 1.90"Weight: 1.70 ozFinish: Black AnodizedReticle: Illuminated Red DotAdjustment Size: 1 MOAProofs: Weather ResistantOptic Coating: Ruby