This musichas the function of wireless transmission and loudspeaker, can light gaseous tube and kind of .It is a perfect teaching tool to students' interest of science, also a great gift.It is a smart device for wireless transmission experiments. It can be used to create high-voltage and do scientific experiments, such as wireless power transmission, wireless lighting, and insulator withstand voltage test. Teachers use it to demonstrate the principle of boosting and high-frequency skinning to students. Effect etc.This music has circuit protection design, will not damage the input device, can in better quality than normal arc plasma loudspeaker.BT connection, convenient and fast.Adopt a newly designed PCB circuit board, the circuit design is reasonable.Plug Type: US Plug, it applies to Canada, , Mexico, Thailand, Taiwan, the , the Philippines and so on.Voltage: AC100-240VColour:Photo ColorMaterial:Acrylic + aluminumPackage Contents:1 x 1 x US Plug4 x light1 x discharge needle1 x and English manualOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.