Powered by your USB port. Create a unique and fun environment on your desk or workstation to ease your work press. Beautiful combination of Neon gases which help create Plasma and Neon have been brought together to form a visual feast. Enjoy the amazement when the electricity follows your finger tips across the 3-inch glass ball. Neon light bulbs merge science and art, miracle of sphere is at the heart of the marvelous device. Small enough not to take up too much desktop space. Big enough to amaze your co-workers with its awe inspiring light show.