Stimulate your curiosity: This plasma sphere also give you a cool science like atmosphere. You'll get firsthand physics knowledge experience and having a blast Touch & Sound sensitive: The plasma globe has two different interactive modes, it not only follow your touch with multi-colored lights, but also respond to the loud music (80db or above). sparks dance in sync with the loud music Unique and Great Decoration: This plasma ball is a perfect way to add a burst of color to decorate your bedroom, living room, office, car, or somewhere else DC adapter & Plug in: The nebula plasma ball comes with adapter , no batteries required. Just plug in the plasma ball and watch it flicker and flare Perfect for Parties: The Plasma lamp are great for your parties! It will respond to sounds 80db and up. create an awesome atmosphere everybody will love plasma ball