Red Circle/Dot Reticle: The RMD502-ER provides a clear sight picture with illuminated 68 MOA red circle and 2 MOA red dot inner for rapid target acquisition. Illumination: 10 bright settings with fully multi-coated anti-reflective lenses that increase light transmission and clarity in any environment and zero distortion. Shake Awake Technology : Powers up when it senses motion and powers down when it does not to save battery life. The readily available CR2032 battery is side-loading, allowing for quick battery replacement without having to remove the sight from the firearm. No more Re-zeroing. Built To Last : This Red Dot Sight housed in durable yet lightweight aircraft-grade aluminum for use in any environment. IPX7 waterproof, fogproof and shockproof construction. Designed for Long Gun: Features a parallax-free,unlimited eye relief, wide field of view with 30mm open lens that greatly increases target acquisition speed and accuracy. Ideal for rifles, shotguns with 1913 picatinny rail. Color Black Brand Name VOTATU Sport Type Airsoft Item Weight 0.3 Kilograms Manufacturer VOTATU Night vision No Reticle Type dot Material Type Aluminum Mounting Type Picatinny Mount Product Style All-season Compatible Devices Shotgun Magnification Minimum 1 x Objective Lens Diameter 30 Millimeters