Electronictechcrafts&reg; Creative Shape Magnetic Suspension Maglev Levitation Globe (large,black) Base band LED lighting effects and anion generator, purify air. Working principle:same as the thunder. The release of negative ions concentration: per cubic centimeter not less than 3 million anion. This is an awesome high tech gadget that people of all ages will enjoy . The best in truly unique toys and gifts Accessories:Manual Plastic Spacer Power Adapter