The Sightmark Mini Shot M-Spec M3 Solar is a dynamic combination of engineering, durability and industry-informed efficiency. Ideal for short- to medium-range engagements, the M3 Solar features a 3-MOA red-dot reticle for rapid target acquisition and automatic brightness adjustment for a crisp reticle and field of view in varying light conditions. A top-mounted solar panel, combined with CR1620 batteries, delivers up to 20,000 hours of batter life while the fully enclosed design and IP67 waterproof rating ensure years of reliability. The M3 mounts on Weaver and Picatinny rails, and it fits pistols with the RMS-CA(R) footprint. Constructed of aircraft-grade aluminum with a matte-black finish, the M3 Solar is shockproof for drops up to 3 ft., delivers flawless operation in temperatures ranging from -22F to 122F, and is recoil rated up to .45 ACP. Included in Package Low Profile Fixed Mount CR1620 battery Batteries Used Type: CR1620 Quantity: 1 Features Dual power options (solar and CR1620 batteries) 3 MOA Dot 20,000+ hours of operating time Automatic brightness adjustment IP67 Waterproof Fully enclosed design Mounts to Weaver and Picatinny rails Fits pistols with RMS-CA(R) footprint Maximum Caliber - .45 ACP