Feature: 1. Bluetooth Music: Start the Tesla coil, when the prompt tone is over, the Bluetooth connection can be successfully searched, then can play music via Bluetooth. 2. Good Heat Dissipation: The base is equipped with cooling fan and heat sink, music tesla coil has good heat dissipation effect and long time work. 3. Wireless Transmission: Interesting wireless transmissions discharge toy can light all kinds of LED lights, electronic tubes, small bubble lights. 4. Adjust Sound Quality: Control the volume of phone to adjust the sound quality, the best sound quality is usually between 40% and 70% of the coil volume. 5. Easy Installation: Easy to install, no manual grounding required, no instructions required, plug in the power and turn on the switch to work. 6. Wide Application: Tesla coil can be used in games or art, and educational wireless transmission experiment desktop model. Specification: Item Type: Tesla Coil Material: PCB and acrylicSecondary Coil Diameter: Approx. 1.97 in(50 mm)Maximum Arc Length: Approx. 0.78 in(20 mm)Voltage: 100-240V 50-60Hz. Package List: 1 x Host1 x Secondary Coil1 x Plug1 x Adapter2 x Small Neon Lamp1 x Plasma Windmill Note: 1. Not suitable for people who implants with electronic medical instruments. 2. Do not touch the arc with your hands. 3. Do not use any conductor to contact the secondary coil. 4. Do not use Tesla coils on metal workstations. 5. Keep away from flammable and explosive objects.Tip: When using the audio cable to connect the smartphone to the tesla coil, it may cause the touch screen to malfunction, which is normal. After unplugging the audio cable, the phone will return to normal. This is a feature of almost all tesla coils.