1. Performance: It is a good teaching tool to stimulate students' interest in science. The artificial simulation of flash can be used as a physical experiment. It can light various types of gas lamps, such as neon lights, fluorescent lights, and traditional energy saving lamps, understand the energy electric field of flash. 2.Compact and Portable: The size of this Bluetooth music coil is 3.5x3.5x1.3in. The optimized coil flash arc is long and thick, and can emit a beautiful arc of more than 10cm, showing a nice flash effect. 3.Nice Present: Supports AUX sound cable mode, allowing you to connect devices via an sound cable to play square wave music, while also enabling you to adjust the length of the flash and the frequency emitted. This device provides a handson experience that can help you better understand basic scientific concepts. It is a valuable educational tool. 4.Bluetooth Music Coil: It generates frequency alternating current through chip oscillation and audio control. The arc pushes the air to generate sound, supporting power transmission.