Description: Schumann wave electromagnetic wave is extremely low frequency, can penetrate any substance, is non-free radiation. Schumann wave is a natural energy source, and it is inexhaustible. Anyone who is easy to resonate with Schumann wave is always obtain energy, and the natural spirit is full and healthy. Through the resonance of the accepted Schumann wave electromagnetic field and the cell frequency of the human body, the overall balance of the human meridian is maintained, thereby reducing the damage caused by EMF free radiation. When the natural regenerative magnetic field is simulated by electronic means, such as using a square wave generator to generate an artificial 7.83 Hz Schumann wave frequency instead of a natural Schumann wave. The generator can induce human body frequency resonance, supplement natural geomagnetism and artificially weaken electromagnetic field EMF interference, and make cell membrane potential balance health. Specification: Power Supply: Built-In Lithium Battery Power Consumption: 5V 0.08A Color: White Material: PU+Plastic Size Chart: Size: 80 x 76 x 24mm / 3.15 x 2.99 x 0.94in Package Includes: 1 x Schumann wave generator 1 x USB cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!