220vac 50/60hz 10cm -Tesla Coil Bluetooth Wireless Transmission Speaker Function Scientific Experiment Tool US Plug

Description

Rotate the sound slowly so as not to be overwhelmed by the arcing sound. Before powering on, be sure to turn the 2 knobs all the way counter-clockwise, so as not to scare you with a sudden sound. This -Tesla has a circuit protection design that won't damage input devices, can play better quality than arc plasma speakers, and can only play square wave . Bluetooth-compatible and easy operation: No grounding required. No audio cable connection required. Power: 0-100w.