<p>This music has the function of wireless transmission and loudspeaker, can light gaseous tube and kind of .It is a perfect teaching tool to spark students' interest of science, also a great gift.</p> <p>It is a smart device for wireless transmission experiments. It can be used to create high-voltage thunderclap 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.</p> <p>This music has circuit protection design, will not damage the input device, can in better quality than normal arc plasma loudspeaker.</p> <p>BT connection, convenient and fast.</p> <p>Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on.</p> <p>Voltage:AC100-240V</p> <p>Colour:Black</p> <p>Material:ABS</p> <p>Package Contents:</p> <p>1 * Musical Coil with accessories</p> <p>1 * Power supply</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>