The 5mm RGB slow auto change led is definitely a unique led lamp. It will begin changing colors as soon as power is applied to it. There is nothing more to do in order for its animation to being. Please take a look at the demonstration video to see exactly how it works and looks. This size led is commonly used in many custom projects, car lighting, models, and nearly every other project you can think of. They are also used for custom projects or in mass production products as well. This is a extremely popular size.This size and type of led is so popular because it is bright, easy to use, small, and versatile. It can fit in most all spaces.We use and have only the highest quality leds out there.