915 Generation 7.83HZ Schumann Wave Ultra-Low Frequency Pulse Generator Audio Resonator Rechargeable Schumann Resonance Wave

The 7.83HZ Schumann Wave Ultra-Low Frequency Pulse Generator is of high accurancy and stability.
The pulse generator is adopted with high stable frequency acquisition elements, precision correction capacitance, precision multi-loop adjustable resistor, display solid capacitance.
Equipped with high-quality lithium polymer battery, with overcharged, over-voltage, over-current protection. There is almost no voltage ripple in the voltage supply.
You can apply it in your bedroom, office, study, tea room and so on.
Easy to operate, with a USB cable and a screwdriver for easy installation.

Battery: Lithium polymer battery
Battery capacity: 850mah
Time: charging current 250mA, 6 hours full of electricity
Working current: 7mV
Working time: 200 hours(full of electricity)
Power: 5V micro-usb android charging cable
Colour:As Shown
Material:PC+metal

Package Contents:
1 x Ultra-low Frequency Pulse Generator
1 x USB Cable

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.