Feature: 1. The schumann wave generator uses an excellent control chip, the ultra low frequency pulse wave frequency is more stable. 2. The schumann wave pulse generator does not need to be connected to other equipment, just plug it in and use it. 3. The unique 7.83Hz ultra low frequency wave helps to improve sleep, relieve fatigue, and maintain physical and mental health. 4. Use 5V USB interface for power supply, easy to connect, and with indicator light, working status is clear at a glance. 5. There are buttons on the generator module that can be used to adjust the strength, which is convenient to adjust according to your own needs, Specification: Item Type: Schumann Wave Generator Material: PCB Purpose: Pulse generator Colour: Black Power Supply Voltage: 5V (USB interface) Rated Current: 0.5A Frequency: 7.83Hz Signal Strength: The button on the right is used to adjust the strength (section 0, 1, 2, 3, 4) Application: 1. Used for creation space to improve creation inspiration 2. Used in the bedroom to help sleep soothe the nerves and relieve insomnia 3. Used in the office to relax and improve work efficiency 4. Used in the audio visual space to enhance the sound field and audio visual effects 5. Used in tea ceremony, spiritual practice, and meditation space to calm the body and mind. Package List: 1 x Schumann Wave Generator Note: 1. It is recommended to place it at a height of 1.5 meters from the ground, which is more conducive to the coverage of the schumann wave, and the application area of a single product does not exceed 18m².2. Do not use it outside the current and voltage range.