1、[Multi Functional] This desktop toy can generate touchable arc, with adjustable lightning length from 0 to 10cm, can also play square wave music, light up LED bulbs when plugged in. With circuit safety design to guard input devices. 2、[Small Yet Powerful] Despite its small size, this artificial lightning arc generator possesses astounding energy and delivers mesmerizing visual effects, providing an electrifying and captivating experience. 3、[User Friendly] No sound cables needed, simply tighten the discharge needle, adjust power and frequency, and plug in to witness a dazzling display of glowing melodies. 4、[Music Playback] Supporting square wave music, the coil can produce different tones according to different discharge frequencies, and the spark arc can also jump with the rhythm of the music. 5、[Education Tool] Features wireless transfer and speaker functions, capable of lighting gas tubes and various bubbles, making it a perfect educational tool for inspiring students interest in science. Item Type: Arc Plasma Coil Desktop Toy Material: Acrylic Rated Power: 60W Discharge Frequency: 5-45Hz ±10% (Lightning Mode) Arc Length: Approx. 0-10cm / 0-3.94in Color: Frosted Transparent 1 x Coil Host 1 x Discharge Needle 1 x Induction Needle 4 x Small Bulbs 1 x Glass Tube 1 x Accessory Storage Box 1 x Plug Power Adapter 1 x Instruction Manual