This music tesla has the function of electric power wireless transmission, can light gaseous tube and kind of bubbles.It is a perfect teaching tool to spark students’ interest of science, also a great gift.so the SSTC Tesla coil becomes a piece with It is a multi-functional artwork with high playability, good viewing, practical science education and so on. Arc spraying reaches 10cm (some buyers have tuned to 15cm!) The secondary power supply (12V-36V 60-80W DC,19V4.22A power adapter is recommended) must be grounded (floor or wall) before power on! Tools such as electric soldering iron and glue gun are required to complete baby making This test kit is dangerous to some extent. The output of the high voltage package is up to 30kv. Do not shoot without sufficient electrical knowledge and experimental ability! The store will not be responsible for any safety accident caused by improper experiment!