GoolRC DC 5V Schumann Resonance 7.83HZ Ultra-Low Frequency Pulse Generator Schumann Wave Generator Audio Resonator for Relax Sleep, Improving Body's Perception of Sound and Images
Special Features
Made from high stability pulse chip, precision correction capacitance, and precision multi-loop adjustable resistor.
Rechargeable large capacity lithium battery can last about 400 days at a time when fully charged.
Benefit to people's physical and mental relaxation, improve the body's perception of sound and images, improve the health of the human body.
To improve the efficiency of work, and reduce mental stress. Ultra-Low Frequency Schumann wave generator, features high accuracy and stability.
With work condition indicator (red, green or frequency flashing blue), you can clearly see its work conditions.
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