Dual Rainbow LED bulbs are fast flashing LED bulbs that change from once color to the next quickly. For each color change it is dramatically fast and flashy and in an orbit they appear to dot, dash, and strobe at random. These are great for orbits. Easily change up the look of your lights by purchasing new colored led bulbs. You can purchase the LED bulbs by themselves or have us install it into a rave light. If you would like us to install it into a housing with brand new batteries please select it from the options.