7.83HZ Schumann wave generator resonances very low frequency pulse help in the treatment of sleep disorders ABS silver FM783 1. Schumann wave 7.83HZ extremely low frequency generator has high accuracy and stability2. Adopt high stability frequency acquisition components, high stability switching circuit, accurate correction capacitor, accurate multi-loop adjustable resistor, shielded fixed capacitor3. Using newly optimized circuit design, stylish silver threaded transmitter circuit4. They allow people to relax physically and mentally, improve the human body's perception of sounds and images, improve human health, increase work efficiency and have a good effect on mental stress5. Made of ABS material, impact resistance, environmental protection, heat resistance and low temperature resistance Specification: Item type: 7.83HZ wave generator Material: ABS Model: Schumann-FM783 Purpose: not directly act on audio or video products to improve sound quality, but to relax people's body and mind under the action of space environment, improve the perception of sound and images of the human body, improve human health, increase efficiency, and also have a good effect on mental stress 2000mah lithium battery Schumann resonances applied to high fidelity: 1. The player has some experience in high fidelity, and the level of high fidelity equipment should not be too low.2. You can hear that differences between the same system will cause pitch changes on different cables.3. It is recommended to purchase two trial versions (better results).4. When placing the product on the speaker, in addition to the appropriate weight, vibration-resistant treatment is also required.Schumann resonances used for sleep:1. It is recommended to buy the test kit at the head of the bed more than 1 meter away from the human body.2. Test plus appropriate weight for anti-vibration treatment.3. Appropriately use the paper cloth inspection light and use the night light to remove the product.4. Try for a week and then review the 7-day experience. Package List: 1 x 7.83HZ Wave Generator 1 x Connection Line Note: Please note that the new type and old type of this product will be sent randomly and make sure you don't mind before placing an order.