1x22x33 Red Green Dot Sight 4 Reticle Reflex Sight Aim Optical Scope Collimator Riflescope with Mount for 20mm Rail ---Features--- 1. Reflex Sight in Tubeless design with 33mm reflex lens aperture provides a wide field of view. 2. Dual illuminated ( red and green), reflex sight with 4 reticle shapes, provide various choices in different occasions, like sunshine, cloudy day. 3. Red green dot sight designed with integral reaver picatinny rail Base for easy mount on with a weaver picatinny rail. 4. Parallax corrected & unlimited eye-relief; Red dot with Allen head screw for windage and elevation click adjustments, with locking screw. 5. Instruction: There are two buttons written on red and on green. When you press the on red button, the red light will on, so does the green light. If you want to turn off the light, you need to press the two buttons together. 6. Windage Adjustment: Adjust the Red and Green Reticle to move left or right by the Allen Wrench, each click adjustment moves the point impact by 1 MOA. Elevation Adjustment: Adjust the point impact to move up or down by the Allen Wrench, obtaining an accurate zero. Click Value: 1MOA per click. ---Specifications--- Material: Aluminum alloy Obj. aperture: 33mm Magnification: 1x Field of view: 15.8m@100m Length: 82mm 4 Reticle Modes: Dot, Circle/Dot, Crosshair/Dot and Crosshair/Circle/Dot combinations are all in one sight. Battery Type: Powered by CR 2032 Battery Rail: suit for 20mm rail Battery: 3x CR2032 (included) ---Package includes--- 1x Red Dot Reflex Sight 1x Lens Cleaning Cloth 3x CR 2032 battery 1x Allen key 1x Manual 1x Box