BT CONNECTIVITY: Play music via BT connectivity and you'll see the arc of the coil pulsating to the music, concentrating musical thunderlight energy in clusters. WIRELESS TRANSMISSION: Music coil speaker has wireless transmission and speaker function, it can light up neon lights, you can touch it at will, there will be a tickling sensation, it can effectively attract attention and improve students' exploration ability. CONTROLLABLE: Music coil is wireless, no need to ground and voice frequency cable connection, slowly increase the power to control the thunderlight arc gradually larger, you can also connect your cell phone, switch to music gear, let the thunderlight change with the rhythm of the music. LIGHT UP LED BULB: Solid state music coil can be placed horizontally or vertically, plug it in and light up the LED bulb, it will work like a charm and is a fun art decoration. SCIENCE TEACHING TOOL: Music coil can wirelessly light up all kinds of gas lamps, such as neon lights, fluorescent lights, old energy saving lamps, etc.It's perfect for people to learn science and physics, and it's a great physics and science teaching tool.