Features: This product is a 7.83Hz low frequency Schumann waves generator featuring high accuracy and stability. Schumann electromagnetic waves is low frequency and can penetrate any material. Each individual have a networking of weak current that will produce frequency resonances when excited by Schumann waves. The overall equilibriums of the human meridians is maintained by receiving the Schumann electromagnetic field and the cellular frequency resonances of the human body to reduce the damage caused to the human body by the EMFionizing radiation. Human frequency resonances can be induced, complementing natural geomagnetic and artificially attenuated electromagnetic field (EMFinterferences, and equilibrating the membranes potential fitness. Design to enhances creation inspiration, relaxation and productivity, the space is to creates space, enhances inspiration, and be used for ceremonies to rest the mind and body. Commonly used in daily life, it can be applied to sleep, and it also have a mild effect on insomnias. You can use it in the audios-visual space to enhances the sound field and audios-visual effects. You can apply it in the bedroom to improve the quality of your sleep and soothes your nerves and regulate your sleeplessness, and you can use it in office to improve your productivity. Specifications: Component:ABS Size:Approx.102x80mm/4.02x3.15inch Working Voltages: DC5v Working Current:10ma Power Interfaces: USB (Supports USB Power Supply) Frequency:7.83hz Package Includes: 1pc Schumann Waves Generator (with Shell) 1pc USB Cable 2pcs Plate 8pcs Screw 4pcs Nut note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.