1. DIY Plasma Speaker KitThis electronic mini coil plasma speaker kit allows you to build your own speaker system. Made from practical materials, it offers a hands on experience for electronics enthusiasts. 2. Voltage OutputInvented in 1891 by Serbian scientist Nikola Tesla, the coil operates on the principle of resonance. It generates ultra voltage but low current frequency alternating current. It can be used for electric lighting, fluorescence spectroscopy, X rays, electrotherapy, and spark energy transmission. 3. Multiple FunctionsThe rear end of the coil produces a spark, which can also be used for ignition. When powered, the fluorescent lamp connected to the coil lights up. Additionally, the innovative concept speaker stimulates the air, creates vibrations, and allows you to play music from phones, MP3 players, and computers. 4. SpecificationsThe PCB size measures approximately 0 mm x 8.0 mm. The input power is DC 15 24 V, with a current of 2 A. It features a DC5.5 interface/pin and a 3.5 mm audio jack, enabling connection to various audio devices.