Description 4 Kinds of Reticle Digital Switch Control 6 Levels R & G Illumination W/ Quick Release Picatinny Mount Relations Feature A Quick Release 21mm Picatinny Mount A Four Kinds of Reticle A Red & Green A Design for Real Fire Arms A Digital Switch Control Specification A Magnification: N/A A Lens Size: Tubeless Sight Window 25x34mm A Exit Pupil: 25-24mm A Overall Length: 82mm (3.2 inch) A Width: 40mm (1.5 inch) A Height: 48mm (1.9 inch) A Height with Quick Release mount: 66mm (2.6 inch) A Weight (net):140g (4.9 ounce) A Eye Relief: Free A Optics Coating: Multi coated A Brightness levels: 6 levels red and green A Parallax: 1 MOA at 80 meters A Elevation Range: 60 MOA A Windage Range: 60 MOA A Battery Type: CR2032 A Digital two sides switches for red or green color dot A Reticle: Four kinds of reticle; reticle exchange with audible click A Feature 1 MOA (50 Yards) windage and elevation A Shock proof, Rain Proof and Fog Proof A 6 levels brightness for green and red color. Press three seconds to shut down the sight A High quality aluminum alloy in durable black matte finish A With reticle lock feature A Integrated 21mm picatinny quick release mount A To exchange battery: A Use coin to release the cap A Take out the used battery A Exchange with 1 pc CR2032 battery A Refasten the cap again A Free fitting: Gift package, hex keys and cleaning cloth