Feature:1. The newly developed primary coil of this product is already in the PCB board, no need to be wound on the outside, which is convenient for fans to install.2. High efficiency, beautiful, is a new design. The Tesla coil is very safe, no electricity, no arc, only light.3. Can be used for student experiments, course design, etc.4. All devices are in-line, no device is patched, and there are few devices with high success rates for beginners.5. The frame adopts PVC material of high strength and good durability.Spec:Item Type:Tesla CoilSecondary Coil Parameters:Enameled Wire Diameter: 0.13 mm (with Paint 0.15 mm)Skeleton Material: PVC PipeSkeleton Outer Diameter: 2cmSkeleton Height: Approx. 4cmNumber Of Turns: 200 LapsWinding Direction: Clockwise From Bottom to TopBattery:3 x AA Battery(Not Included)Type:(Optional)Assembly KitFinished ProductPackage List:Package List 1:1 x Printed Circuit Board1 x Secondary Coil1 x AA Battery Compartment1 x Neon Lamp1 x 105 Leaded Multilayer Ceramic Capacitor1 x 8050 Transistor1 x 20K Resistor1 x 3mm LED White BluePackage List 2:1 x Finished Tesla Coil