Description:

This product is Schumann wave 7.83HZ very low frequency generator, features high accuracy and stability.
High stable frequency acquisition elements: high stability pulse chip, precision correction capacitance, precision multi-loop adjustable resistor.
High quality polymer batteries, with overcharged, overvoltage, overcurrent protection. There is almost no voltage in the voltage supply.
With work toggle switch, easy to use.
Schumann wave can be applied to HIFI or sleep.

Specification:

Polymer battery capacity: 1400mah
Time: charging current 250mA, 6 hours full of electricity
Working current: 7mV
Working time: 200 hours (full of electricity)
Size: 7 x 5.5 x 1cm/2.76 x 2.17 x 0.39inch

Package Includes:

1 Piece Schumann Wave Generator