1. Waveform: Pure single sine wave at 7.83Hz, free of noise and harmonics, with standard waveform 2. Signal Source: Utilizes DSP signal synthesis technology, ensuring signal stability and high frequency stability 3. Power Supply: Powered via Micro-USB port at 5V, compatible with phone chargers and power banks for convenient use 4. Power Output: High-fidelity driver amplifier circuit ensures no cost-cutting compromises, no waveform distortion, and stable output power. 5. External Interfaces: Connects to oscilloscopes for waveform observation; also supports external speakers for tactile waveform vibration feedback. Indicator Light: Breathing light indicates operation, aiding sleep. Schumann Frequency: Standard 7.83Hz sine wave with high frequency stability Product Specifications: Power Interface: Micro-USB (5V) Supply Voltage: DC 5V Rated Power Consumption: Less than 2W Operating Frequency: 7.83Hz Waveform Parameters: Pure sine wave, no harmonics Dimensions: 99mm x 87mm Color:Black Material:PCB Package Contents: 1 set * Schumann Wave Signal Generator