1、The magical Tesla coil voltage high temperature and high voltage plasma. It can sing, ignite, wirelessly transmit electricity, illuminate fluorescent lamps, and has wonderful arcs. There are many fun and very interesting scientific experiments. 2、Tesla Coil is a transformer (resonance transformer) that operates on the principle of resonance and is mainly used to produce AC power with ultra-high voltage but low current and high frequency. 3、The Tesla coil consists of two sets (sometimes three sets) of resonant circuits coupled together. 4、Tesla uses these coils for innovative experiments such as electrical lighting, fluorescence spectroscopy, X-rays, high-frequency AC current phenomena, electrotherapy and radio energy transmission, and transmission and reception of radio signals. 5、This Tesla adds a music player function to the ordinary Tesla: a new concept speaker that the arc excites the air to become the air vibration generated by the plasma! You can play mobile/computer music with clear sound. 6、The voltage input is 15-24V DC. The arc length is 5-10mm at 24V. It is ideal for small size, complete function and energy. It can work for a long time without interruption. It can also illuminate the LED, foam energy-saving lamp and flash tube. You can play radio transmission, rotating arc, etc. Item Type:Tesla Coil Power:15W Power Supply Interface:DC5.5x2.1 Compatible with 2.5 Audio Jack:3.5 Circuit Board Size:8.5 x 3.1cm / 3.35 x 1.22in Kit Weight: 56 g / 1.98 oz(approx.) Coil Size:(Diameter x Height) Approx. 2.05 x 6.8cm / 0.81 x 2.68in Coil Loops:350 (Enamelled wire with 0.15 coil diameter (about 0.13 without paint)) 1 x Printed Circuit Board 1 x DC005 Base 1 x 3.5 Audio Cable 1 x 2K Resistor 3 x 10K Resistor 1 x 10UF25V Capacitor 2 x Heat Sink 1 x BD243 Transistor 1 x P75NF75 MOSFET 4 x 10mm Female-Female Standoff 8 x 3*6 Screw 1 x 15mm Single Core Tin Plated Wire 1 x 105 Leaded Multilayer Ceramic Capacitor 3 x 3mm Blue LED 1 x Coil