Fangrui Product Details The For Schumann Wave Generator Is Designed To Promote Relaxation And Overall Well-being. By Emitting A Sinusoidal Wave, It Creates A Serene Environment, Helping Our Customers Enjoy Better Health And Improved State Of Mind. This Healing Frequency Generator Stands Out With Its Provision Of Multiple Waveforms, Which Include Sinusoidal, Square Wave, And Inverted Square Wave. With A Remarkable Adjustable Frequency Generator Range Of 0.01-30000hz, Our Frequency Healing Devices Allows Customers To Personalize Settings According To Their Needs, Effectively Boosting Its Efficiency. This Square Wave Resonator Ensures A Stable Frequency Output With A Default Value Of 7.83hz, A Sine Wave Voltage Amplitude Of 3v And A Square Wave Voltage Amplitude Of 5v. The Pcb Board Size Of The Generator Is 15x15cm, Making It Compact And Easy To Carry. It Can Be Powered By A Usb Interface, Providing Convenience For Both Home And Travel Use. Colour:as Shown Material:plastic Package Contents: 1set * Frequency Generator For Healing