Product Dimensions:10.6 x 10.6 x 6.1 cm Assembly Required:No Material Type(s):Plastic Product Bluetooth Music Tesla Coil Mini Lightnings Generators Interesting Science Experiments Material: other Color: as the picture shows, Package weight: 650gContains: 1pc Bluetooth Music Tesla Coil Incredible impression: The Bluetooth music coil is great Just a slight feeling and temperature, you can the at will. You don't have to worry about scaring anyone or sh ocking them. This is a very cool item and a great gift. Do you know the feeling when you see something so cool, you can't help staring at it? Bluetooth coil is The perfect way to amaze your family and friends Entertainment and enjoyment: High frequency voltage pulses can produce bright, colorful and arcs, which are very suitable for parties or just to SHO-W O-FF your latest gadgets. Perfect for children and adults. Let you experience the electric pleasure within your reach. Interesting scientific experience ment: Do you need compelling electronic products? This coil is an attractive intelligent device for wireless power transmission experiment. Even if the power supply is not in, LED bulbs and neon lights near coils will light up and sparks Bluetooth pairing: With Blueto oth compatibility, you can easily connect your mobile phone or other devices and play square wave music (direct download link is provided). This model is specially designed for square wave music. It can play square wave music and is very good. You can also search and download music online.