What is a terrarium? It is a miniature garden within a container that simulates a natural environment. So, let your child discover the beauty of nature by creating their own beautiful terrarium with this all-inclusive kit. Watch as it grows by day and glows at night with the innovative LED light under the lid. Grows by day, glows at night: Beneath the lid, there is a built-in innovative LED light that transforms the experience into something magical. At night, just hit the small switch to turn on the light and watch how your terrarium turns into a gorgeous illuminated tabletop garden. You have to see it to believe it! The light can easily be recharged with the included Micro-USB cable.