Features: Brand new and high quality This Schumann generator is 7.83HZ very low frequency generator, which features accuracy and stability. The metal material ensures its durability, precisions with a long service life The Schumann generator adopts stable frequency acquisition including stability chip, precisions correction capacitance and precisions multiloop adjustable resistor, in order to ensure the reliable performances of this product This Generator is adopted with polymer batteries, with overcharged, overvoltage, overcurrent protections. There is almost no in the supply The Schumann can help create relaxed making people calm and comfortable. It helps to improve sleeps quality, relieve fatigue and physical and mental health. With work switches, this Schumann generator is easy to use.
note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.