Feature:1. FOR SPATIAL ENVIRONMENT: Low frequency pulse generator is acting on the spatial environment, the human body's perception of sound and images, and increased feedback to nature and life.2. PERFECT FOR HEALTH: 7.83Hz Schumann wave generator can improve sleep, where easy to resonate with the Schumann wave people, equal to often in the charge, natural spirit full and healthy body.3. FOR HIFI: Schumann wave generator applied to HIFI, players have some HIFI experience, HIFI equipment level can not be too low, can hear the same system on the different wire brought about by the change in tone.4. FOR SLEEP: Schumann resonance pulse generator applied to sleep, it is recommended to buy a set for trial, placed in a set of bedside, more than 1m/3.3ft distance from the body.5. WIDE RANGE OF APPLICATIONS: Ultra low frequency pulse wave generator is suitable for a wide range of applications, including sound visual spaces, bedrooms, offices, tea ceremonies, Zen spaces, etc.Specification:Item Type: Schumann Wave GeneratorMaterial: PCBPower: 5WVoltage: 5V.Package List:1 xSchumann Wave Generator6 x Housing1 x Power Supply Line8 x Nut8 x Screw4 x Stud4 x Screw PadNote:1. The player has some hifi experience, hifi equipment level can not be too low2. Can hear and distinguish the timbre changes brought by different wires on the same system3. It is recommended to buy two sets for trial (the effect is better)4. Put the product on the speaker when trying it out