Precise waves Generation: Features 7.83Hz sine waves technology to accurately simulate Earth ' s resonance frequency, effectively addressing electromagnetic interferences issues in electronic devices Portable Field Optimizers: Compact 100mm design weighing only 0.41kg, easily fits on desktops or in travel bags Enables field management compared to heavy traditional frequency regulators Quiet Operations Design: Without noise electromagnetic field output with not mechanical fan disturbance, ensuring absolute quietness Perfect for sensitive individuals or creative environments, eliminating sound pollution from traditional white noise devices Versatile Type C Power Supply: Suitable for phone chargers and, equipped with a 2000mAh built in battery for extended use Scientific Grade Waveform Output: Utilizes precisions circuitry to generate clean sine waves, gently influencing human bioelectricity Ideal for high stress professional, restoring natural ionospheric resonance conditions, Manufacturer: Oxxggkao