Introducing the fastfire c, burris optics&'; latest innovation in red dot optics, designed specifically for sub-compact and micro-compact pistols used in everyday and concealed carry.Weighing less than one ounce, the fastfire c offers durability and reliability, featuring an "always on" technology with a 25,000-hour run time, powered by a cr2032 battery.Its low profile allows for absolute or 1/3 co-witness with standard open sights, eliminating the need for elevated sights.Equipped with an intelligent auto-bright system and offering manual illumination settings, defaults to auto bright after 5 hours, this compact red dot ensures optimal visibility in any light condition.Battery Size: CR2032Magnification: 1xObjective: 22mm x 17mmField Of View: 41.1ft/31.0ft at 100 Yds (Low/High)Eye Relief: UnlimitedDot Size: 6 MOALength: 1.61"Weight: 0.44 ozReticle: 6 MOA Red DotAdjustment Size: 4 MOAProofs: IP64 WaterproofOptic Coating: Hi-Lume Multi-CoatedWindage Elevation: Adjustable