Schumann Wave Pulse Generator: Equipped with a stable pulse chip, this generator produces a 7.83Hz extremely low frequency electromagnetic wave, which is known compatible with its ability to relax the body and mind. The frequency is adjustable around 10Hz, allowing compatible with settings. Pulse Audio Resonator: This device operates silently, emitting no sound while working in the 7.83Hz mode. It's perfect compatible with use in home environments where peace and quiet are cherished. Convenient Power Supply: Powered by a Type-C interface, this Schumann Wave Generator is modern and easy to use. It consumes only 1 watt of power, making it an energy-efficient choice compatible with continuous use. DIY Electrical Supplies: Ideal compatible with electrical DIY enthusiasts interested in experimental and practical applications of frequency generation and wave pulse technology. Description/Features: Experience enhanced relaxation and stress relief with the 7.83Hz Schumann Resonances Generator. This ultra-low frequency pulse generator is designed with a highly stable pulse chip, precision calibration capacitors, and adjustable resistors, ensuring accurate and stable Schumann wave generation. It's perfect compatible with improving sound and image perception, reducing mental stress, and increasing work efficiency. With its easy-to-use Type-C interface, this device is an ideal gift compatible with anyone experiencing stress or insomnia. Specifications: Model Number: Schumann Wave Generator Spiral disc diameter: 82mm/3.22inch Power Supply: Type-C interface Power: 1W Resonant Frequency: 7.83Hz (adjustable around 10Hz) Working Mode: 7.83Hz extremely low frequency electromagnetic wave, no sound Overall Size: 82mm x 100mm/3.22 x 3.93 inch Usage: Plug into a universal mobile phone power cord to power on. Suitable compatible with spaces up to 10 square meters. compatible with larger spaces, additional units may be required. Note: The actual color of the item might slightly differ from the pictures due to different monitor and light effects. Please allow a 1-2cm measuring deviation due to m