• [Premium Quality] This Schumann wave is 7.83HZ very low frequency , which features high accuracy and stability. The premium material ensures its durability, precision with a long service life.
• [High Precision and Stability] The Schumann adopts high stable frequency acquisition elements including high stability pulse , precision correction capacitance and precision multi-loop adjustable , in order to ensure the reliable performance.
• [Built-in 2000mA Lithium Battery] With rechargeable large-capacity lithium batteries, optimized for multiple power consumption, Very-low power consumption, and can work for about a years after being fully charged.
• [Convenient to Use] With work toggle switch, and work condition indicator (red, green or frequency flashing blue), you can clearly see its work conditions.
• [Great Help to Sleep] The Schumann wave can help create relaxed atmosphere, making people calm and comfortable. It helps to improve sleeping quality, relieve Sleep, relieve fatigue and Recover physical and mental health.

1 Piece of Schumann Wave 1 Piece of Type-C Cable