Wireless Bluetooth Plasma Coil Speaker Science Experiment Kit for Physics Learning Features： 1、Lighting Mode: You can slowly increase the power to control the lightning arc, making it gradually become larger and thicker. 2、Music Mode: The artificial lightning toy can be connected to a phone via BT. Switch to the music mode and the lightning will dance to the rhythm of the music, creating a unique and entertaining visual display. 3、High-Temperature Protection: This coil is equipped with a high-temperature protection feature. If the working temperature becomes too high, the device will automatically stop discharging to ensure safety. 4、Easy Operation: The BT speaker artificial lightning generator is designed for user-friendly operation. Simply tighten the discharge needle and plug in the power supply to start the device. 5、Educational \u0026 Fun: Whether you\u0027re a science teacher, an amateur enthusiast, or a researcher, this device provides a practical way to better understand basic scientific concepts. It\u0027s not only a valuable educational tool but also a fun toy gift. Specification： Specifications: Main Material: Acrylic Input power: 60W Input voltage: 48V Discharge frequency: 5-45Hz ± 10? Color: Gold Size: 9*9*3.25cm/3.54*3.54*1.28inch Package List： 1 * Host 1 * Discharge Needle 1 * Probe 4 * Small Bulb 1 * Power Adapter 1 * Accessory Box 1 * Manual