Attention:
1.  In Bluetooth and lightning mode it is recommended to use the device for about 8 minutes, then you need to disconnect the power supply to let the device stand for a period of time until the bottom of the heat dissipation and then use it again, if you use it for a long period of time uninterruptedly, it is easy to burn the MOS tube of the device
2.  After connecting the Bluetooth mode, you need to adjust the volume of the phone's sound to the maximum, the Tesla coil in order to release the electric arc
3.  The device is used to play the specified music (square wave music) please read the instructions carefully, it is not recommended to play other music, because it can not achieve better results, if you can not find the square wave music, please consult customer service to provide you with music playback link!
4. can not adjust the knob to the maximum, the following schematic best

Music Solid State Tesla Coil Artificial Lightning Arc Plasma Loudspeaker Wireless Transmission Experiment Science Desktop Toy

BETTER PERFORMANCE-----This music tesla has circuit protection design, will not damage the input device, can play music in better quality than arc plasma loudspeaker, only square wave music can be played.

BLUETOOTH AND EASY OPERATION-----It's Bluetooth. No grounding needed. No audio wire connection. This model is specially design for square wave music. It can only play square wave music, and perfect good.

This music tesla has the function of wireless transmission and loudspeaker, can light gaseous tube and kind of bubbles. It is a perfect teaching tool to spark students' interest of science, also a great gift.

AMAZING CONVERSATION PIECE ON YOUR DESK-----It's funny to see people's looks and reactions when they squeeze a little shot for this tesla coil model. Plug it and light LED bulb up, and then it works like charm. All of your guests want to know what happened, icebreaking success.