The base produces high frequency electromagnetic waves that cause the gases to turn into plasma If you touch the ball, the lightning bolts will combine into a strong beam and follow the movement of your finger Clap hands to it and watch the pattern of the sound reflected in its striking pulsations Made of high quality resin and glass material,exquisite and classic design,great collection on craft artwork.size:15cm(L)*15cm(W)*23cm(H).weight:600g Great for decoration for homes,parties,cafe,bars,restaurants,exhibitions and so on,perfect for Halloween and Christmas gift etc.