Music for Tesla Coil Plasma Speaker Wireless Transmission sound Solid Power Mode 13960921Feature: Protect the audio input device (if there is no protection circuit, this type of product can easily cause the failure or even damage to the electronic device! For example, if the mobile phone is touched, the touch screen will malfunction, and if it is heavy, it will crash) Excellent sound quality playback (play music as the highlight of this product, in the development of the circuit to carry out a number of component parameter optimization