POWERFUL PERFORMANCE IN A COMPACT DESIGN: Measuring only 4.2x4.2x2.35in, but the energy emitted by this device is quite remarkable. To prevent the occurrence of a jarring arc sound, it is recommended that you gradually increase the volume. Prior to powering on, it is important to turn both knobs fully counterclockwise to minimize the sudden loud noises that may startle you. SOUND QUALITY IMPROVEMENT ----- This boasts superior sound quality compared to similar models, providing an enhanced music experience. This Tesla music coil features a circuit protection design, ensuring your input device remains undamaged. Supports only square wave music playback. EASY OPERATION ----- Specifically designed for square wave music playback, it delivers exceptional performance in this regard. You can easily search and download square wave music online, while the detailed manual included in the package provides comprehensive instructions for effortless operation. LIMITLESS FUN ----- The music Tesla is equipped with loudspeaker functions, capable of illuminating gaseous tubes and and bubbles. Cool Desktop Gadgets. It's an excellent teaching tool that can ignite students' interest in science, making it an ideal gift for educators. Additionally, it's an exciting device that offers endless hours of entertainment for people of all ages. IMPRESSIVE DESKTOP CONVERSATION STARTER ----- This Tesla coil model is not only a fascinating piece to display on your desk, but it also generates entertaining reactions from people when they witness it in action. Simply plug it in, and watch as the bulb illuminates, magical lightning, beautiful music, showcasing its mesmerizing functionality. Your guests will be intrigued and curious, making it an excellent icebreaker and conversation starter. EXCITING SCIENCE EXPERIMENT KIT ----- The music Tesla features capabilities creates lightning and can light up LED bulbs, making it an excellent tool for conducting physical experiments. The artificial stimulation of lightning sparks can be touched and studied, improving students' ability to learn and explore scientific concepts. Moreover, it serves as a captivating piece of desk decor and an exceptional gift for anyone interested in science and technology.