What is this? The display base is made of artificial crystal, suitable for displaying items, such as crystal artwork, ornamental bowls, stones, and other crafts and collectibles. Are there any advantages of the product? The display base is fully transparent, very durable and works well, and looks more elegant, used for ball objects. How to use it? Just put your crystal artwork or other ball shape craft item on the base. What should I notice? All size is measured manually, please allow +/-0.1 inches error; batteries are not included here.