Features: The schumanns waves Generator features adjustable frequency ranges with default 7.83Hz setting, allowing precise customization through its intuitives numeric keypad and 1touch OK confirmation for instants operations. from ABS materials, this device operates via standard USB charging cables, offering plugs and play functionality with clear digitals input controls for effortless frequency adjustments. for wellness enthusiasts, office workers, and meditation practitioners seeking to enhances environmental energy balance in heavy spaces. Perfect for creating harmonized atmospheres home studies, corporate workstations, or relaxation zones where electromagnetic field optimization matters. Engineered with advanced signals stabilization technology, this computer accessory ensures consistent schumanns resonance output to support focus and well being in modern digitals environments. Specifications: Materials: ABS Size:as picture show Type: Host, External Antenna, 1Set(optional) Package Includes: 1Set schumanns waves Generator note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.