1. This Music Has The Functions Of Wireless Transmission And Speakers, And Can Light Up Gas Tubes And . It's The Perfect Teaching Tool To Students' Interest In Science, And A Great Gift. 2. It Is An Intelligent Device Used For Wireless Transmission Experiments. It Can Be Used To Create High-Voltage, And Can Also Be Used To Conduct Scientific Experiments, Such As Wireless Power Transmission, Wireless Lighting, Insulator Withstand Voltage Tests, Etc. 3. Teachers Use It To Demonstrate The Principles Of Boosting And High-Frequency Peeling To Students. Effect Etc. 4. This Music Has A Circuit Protection Design That Will Not Damage The Input Device, And The Quality Of Music Played Is Ordinary Arc Plasma Speakers. 5. BT Connection, Convenient And Fast. Input Power: 60W Music Transmission : Bluetooth Input Voltage: 48V Arc Length: 0-10cm Tips: 1. Please Do Not Approach And Items While Working. 2. Avoid Arc Hitting Other Electronic Equipment 3. Be Careful Not To Be Poked By The Discharge Needle 4. Must Use It Under Adult Supervision. 5. Do Not Place Objects On The Host Panel To Avoid High Temperature Damage To The Casing. Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Plug Type:EU Plug,it applies to Indonesia, Germany, France, , Italy and so on Voltage: AC100-240V Colour:As Shown Material:ABS Package Contents: 1 x Wireless Bluetooth Audio Box 1 x European Plug Power Cord 1 x Antenna 2 x Pins 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.