1. High-frequency stable output: supports Schumann frequency output with an adjustment range of 0.01Hz-100000Hz to ensure signal stability<br> 2. Portable and easy to use: designed to be portable, easy to operate, suitable for home, office or travel scenarios.<br> 3. Multiple waveforms: supports sine wave, square wave, and inverted square wave interface waveforms<br> 4. Highly integrated design: digital circuit technology replaces complex analog circuits to improve anti-interference ability and stability<br> 5. Schumann wave simulation: simulates the earth's natural Schumann waves, which helps to relax the body and mind and improve health.<br> Power supply voltage: 5V<br> Power supply interface: DC5.5x2.1<br> Rated power consumption: Less than 1W<br> Default frequency: 7.83Hz<br> Adjustment range: 0.01Hz-100000Hz<br> Antenna waveform: sine wave<br> Interface waveform: sine wave + square wave + inverted square wave<br> Sine signal voltage amplitude: 3V<br> Square wave signal voltage amplitude: 5V<br> Colour:Green<br> Material:PCB<br> Package Contents:<br> 1 x Schumann Generator<br> 1 x USB Cable<br> Only the above package content, other products are not included.<br> 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.