Precise waves Generation : Features 7.83Hz sine waves technology to accurately simulate Earth's resonance frequency, effectively addressing electromagnetic interferences issues in electronic devices. 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. Portable Field Optimizers : Compact 100mm design weighing only 0.41kg, easily fits on desktops or in travel bags. Enables convenient magnetic field management compared to heavy traditional frequency regulators. Package includes: 1Piece Frequency Generator 1Piece Charging Cable