This multi-reticle sight features four reticle choices of dot, cross, bullseye or starburst with a rheostat knob for multiple brightness settings to allow customization for each situation. D4RGB features dual red and green illumination with 3 brightness settings for each color. Sight has a rugged anodized aluminum body, heads up display, unlimited eye relief and field of view, and is powered by common CR2032 3v lithium battery. Features: Red and green colored four reticle set: dot, star burst, cross, bullseye LED (light emitting diode) 100% safe for the eyes Unlimited eye relief for flexible mounting 5 brightness settings for each reticle color Tools to adjust reflex optics zero are included Rubber lens cap Powered by CR2032 battery - included International orders will not include batteries