Objective diameter: 30mm Tube diameter:40mm Battery: 1*CR2032 1/2-click adjustment Eye relief: unlimited Dot color: red & green (each color with 5 levels of brightness) Rail Mount: 11mm and 20mm (3/8" & 5/8") two Mode Feature： 【Dual Illumination】: This reflex sight features both red and green illuminated reticles, each with 5 adjustable brightness levels. For the best performance, we recommend using the red reticle in low-light conditions and the green reticle for daytime use, ensuring optimal visibility in any environment. 【Wide Field of View】: Featuring a 30mm reflective lens aperture, this gun sight provides a wide field of view, perfect for quick target acquisition and tracking fast-moving objects. Combined with unlimited eye relief, it ensures precise and comfortable target alignment during aiming, enhancing accuracy and performance. 【Quick Adjustment Knob】: The red dot sight is equipped with user-friendly adjustment knobs, allowing for precise and effortless windage and elevation adjustments to enhance accuracy. 【Sturdy Construction】: The red dot sight features a robust Plastic structure, ensuring durability and shock resistance. The reflector is sealed with an O-ring to prevent moisture and dust from entering, protecting the optics from fogging. Additionally, it comes with a detachable quick-flip lens cover, keeping the lens clean and free from debris during storage or outdoor hunting adventures. 【Versatile Rail Compatibility】: Designed to fit standard 20mm/11mm Picatinny, this red dot sight is compatible with a wide range of firearms for easy installation and versatility. Product included： 1*Red & Green Dot Sight 2x Caps (one front and one rear) 1*Cleaning cloth 1*Wrench 1*CR2032
