Hologram sticker is about 3 1/4" square
It shows each view in 3D, switching views half-way through the motion to view it, so you can see the brain 3-dimensionally and as you turn it, it transforms to a 3-dimensional skull view. Very interesting. The absolute crispest view of holograms comes from using a "point" light source, such as a single incandescent lightbulb, or the sunlight coming through a dark room, or a candle. The larger the light source, the "blurrier" the view.