Features: Multi-function music tesla coil, interesting scientific experiments, suitable for scientific exploration and research. Support many ways to play, such as ion windmill, ionic wreath, lighting in the air, plasma music, discharge spark. High quality epoxy coating is selected, thickened heat sink, more durable and beautiful. It can cultivate children\'s cognition and interest in science and experiment, also a great gift. This product only does the DIY study of Tesla principle, and can not be powered on for a long time when unattended, so as to avoid accidents caused by short circuit due to overheating.