Simply Silver New USB Magic Crystal Globe Desktop Light Lightning Lamp Plasma Ball Sphere Unbranded 100% Brand New & High Quality. 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 in its striking pulsations. Perfect decoration for homes, parties, cafe, bars, restaurants, exhibitions and so on.