Let's do science! Red Black Tesla Bluetooth Music Coil Arc Lightning Plasma Generator Audio Speaker FREE ENERGY Device If you want to find the secrets of the universe, think in terms of energy, frequency, and vibration.--Nikola TeslaThis music Tesla has the function of wireless transmission and a loudspeaker can light gaseous tubes and kind of bubbles.It is a perfect teaching tool to spark students interest in science, and also a great gift.It is a smart device for wireless transmission experiments.It can be used to create high-voltage lightning and do various scientific experiments,such as wireless power transmission, wireless lighting, and insulator withstand voltage tests.Teachers use it to demonstrate the principle of boosting and high-frequency skinning to students. Effect etc.This music tesla has a circuit protection design, will not damage the input device,and can play music in better quality than a normal arc plasma loudspeaker.BT connection is convenient and fast.Adopt a newly designed PCB circuit board, the circuit design is reasonable.Features1. Dual mode (Bluetooth music mode/Lightning mode)2. Easy to use3. High temperature protectionDischarge stops when the temperature is too high,and resumes operation when the temperature is lower than the warning temperature4. Frequency adjustment5. Length adjustment6. ABS material shellFeatures:--Long lasting: Bigger heat sink equipped, can work for hours. No security concerns.--Better performance: This music tesla has a circuit protection design,will not die the input device, can play music in better quality than arc plasma loudspeaker, no format limitation.--Easy operation: No Manual is needed at all.Specification:1. Supply voltage: 110-240V AC 50/60Hz2. Power: 0-100w3. Lightning length: 0-8cm (adjustable by knob)4. Host size: 96*96*33mm** PLUG and PLAY! No grounding is needed. --Endless fun.Please use the mobile phone Bluetooth to connect "Tesla Coil 10 Mini],you can play music in music mode.Apple mobile phone needs to be turned on before playing music[Settings] [Sound & Haptics] [Headphone Safety] Disable the [Reduce high volume] option.Playing normal music will not damage the device, but it will not work well. Square wave music is recommended.Package includes:1x BT Music Tesla Coil Arc1x Power Adapter (We will send the correct plug according to your country)1x Needle