This is a vintage Holiday Time color changing base for a 48" fiber optic tree. Two extra light changing color wheels are included along with the power source and manual.

Here is how it works: select your color wheel and place it inside the base according to instructions in the manual. Plug it in, and the light will shine up through the color wheel into and through the fiber optic tree. As the color wheel turns, the lights will move and change in the tree. It is a beautiful and impressive affect. This item has been tested and works correctly as intended. The bulb is also still good and will not need to be changed. You will, however, need to provide your own fiber optic tree, as that part is not included.