Item Type: Ultralow Frequency Pulse Generator Material: PCB1High Accuracy: The pulse generator uses highly stable frequency acquisition components, including a highly stable pulse chip, precise calibration capacitors, precise multi loop adjustable resistors, and display solid capacitors, all of which guarantee precise and high accuracy operation. 2Safe To Use: 7.83HZ Schumann wave generator, ultra low frequency, with high accuracy and high stability. Adopt premium polymer cell with overcharge, overvoltage and overcurrent protection and better durability. Power supply voltage almost no voltage ripple. 3Multi Functional: Schumann wave pulse generator can help relax one's body and mind, improve your body's perception of sound and images, and also help improve human health, increase work efficiency, improve mental state, and improve stress. 4Multi Application: This Schumann resonance pulse generator has a wide range of applications in daily life. It can be applied to HIFI or sleep, and it also has a effect on insomnia. Can be used in sound visual space, bedroom, office, etc. 5Working Principle: Professional Schumann wave generator, each person is a weak electrical network, stimulated by Schumann wave, it will produce frequency resonance, and the strength of its resonance is related to the internal structure of the electrical network (human body).1 x UltralowFrequencyPulseGenerator 6 x Housing Assembly 1 x Wire 1 x Screw Kit