Features:
* Brand new and high quality
* Using high-quality materials, the product has good frequency stability;
* This product can not only output 7.83Hz Schumann wave, but also incorporates programmable frequency modulation technology, which can adjust the frequency within the range of 0.1Hz~30KHz;
* 2 specifications can be selected according to needs, the red square wave non-adjustable frequency is fixed at 7.83Hz, and the green standard model has various frequencies adjustable from 0.1Hz to 30000Hz;
* Digital circuit crystal oscillator frequency reference, more stable and stronger anti-interference ability;
* The power supply interface adopts DC5.5*2.1 interface, which is easy to use. It can work by inserting a rechargeable battery or USB charging head or other USB power supply device into the USB end.
* Schumann waves themselves do not directly act on sound or video products to improve sound quality, but act on the space environment to relax the human body and mind, improve the human body's perception of sounds and images, improve human health, increase work efficiency, and relieve psychological stress. Better results. This product can not only output 7.83Hz Schumann wave, but also adjust the frequency within the range of 0.1Hz~30KHz. It is a digital circuit crystal oscillator frequency reference, which is more stable and has stronger anti-interference.

Specification:
Style (optional): Adjustable frequency DPBT, Non Adjustable DPBU
Green standard model:
Circuit board size: 15*15cm
Antenna waveform: sine wave
Interface waveform: sine wave + square wave + inverted square wave (the lower left corner is the output interface, and the waveforms are output at the same time)
Power interface: DC5.5*2.1
Power supply voltage: 5V
Rated power consumption: <1W
Default frequency: 7.83Hz
Adjustment range: 0.1Hz~30000Hz
Sinusoidal signal voltage amplitude: 3V
Square wave signal voltage amplitude: 5V
Change the frequency method.
Directly enter the frequency and press the lower left key to complete the setting.
For example, press [7][.][8][3], then press [OK] to set it to 7.83Hz. The default power-on output is 7.83Hz, and the setting range is 0.1~30KHz.
how to use.
Take out the USB cable from the product, connect the round hole end to the circuit board, and insert the USB end into the rechargeable battery or USB charging head or other USB-powered device to work.
Green adjustable model to change frequency: directly enter the frequency and press "OK" to complete the setting
Note: This product does not have a clear plastic case

Package Included:
1 x Schumann Wave Generator
1 x USB cable

Note:
1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2.Please allow slight manual measurement deviation for the data.

Payment must be completed within 5 days. If you have any problems about payment, please contact us via ebay message.

We only ship to confirmed ebay Order addresses. Please comfirm that your Order address is in line with your shipping address.

Please kindly note that the combined shipping is not provided because the shipping fee is calculated by weight. Also, the each additional item means exactly the the same color and size. 

It takes about 7-15 working days to Australia; about 10-30 working days to other countries. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.

We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any questions, please feel free to contact us via "Ask seller a question" . We will reply your email within 24 working hours.