Precision machining - bottom case protection to prevent scalding and make the product more delicate; the secondary coil is epoxy coated to reduce coil disconnection. This is an SGTC . Generally speaking, SGTC has a volume. product adds circuitry to make the product smaller.Simple operation - no manual operation at all. Plug and Play No grounding required.Durable and durable - This coil has heat dissipation device, cooling fan and reasonable circuit design, which has good heat dissipation effect and can be used for a long time.Infinitely - This SGTC is an artificial generator, although it doesn't shock like natural. they are similar in shape and enjoy this beautiful arc. It has the function of wireless transmission, which can dilute the trachea and air . It's the perfect teaching tool to interest in science and a great gift. talking pieces on your desk - It's to see how people look and react when they squeeze a little for this Coil model. Plug it in, the LED bulb and it will work like a charm. All the guests wanted to know what happened, the success of the .Plug Type:US Plug,it applies to Canada, ,Mexico, Thailand, the , the Philippines,Taiwan and so on.size:10.8x10.8x21.1cmMaterial:Acrylic+Metalcolour:GoldVoltage: AC100-240VPackage Contents:1 * coil1 * adapter2 * 1 * small screw (placed on top to center the arc)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.