Features 1.High 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. 2.Safe 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. 3.Multi 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. 4.Multi 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. 5.Working 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). specificationItem Type: Ultralow Frequency Pulse Generator Material: PCB PackageList1 x UltralowFrequencyPulseGenerator 6 x Housing Assembly 1 x Wire 1 x Screw Kit