Truglo&';s trubrite dual (red/green) open dot sight has two choices of reticle color for contrast against any target or background.An unlimited eye relief gives a wide field of view for ultra fast target acquisition.The target side of the 34mm lens is coated for anti-reflection and is parallax free from 30 yards.It has a integrated weaver-style mounting system and (3v-cr2032) batteries are included.Battery: CR2032Magnification: 1xObjective: 34mm x 24mmField Of View: 74 ft @ 100 ydsEye Relief: UnlimitedDot Size: 5 MOALength: 3.48"Weight: 5.50 ozFinish: Black AnodizedReticle: Dual (Red/Green) Illuminated DotAdjustment Size: 1.0 MOAProofs: Water/Shock ResistantOptic Coating: Anti-ReflectionWindage Elevation: Adjustable