Schumann wave itself is not directly acting on the sound or video products to improve the quality of sound quality, but the role of the space environment, people's physical and mental relaxation, improve the body's perception of sound and images, improve the health of the human body to improve the efficiency of work, mental stress also have a better effect. Application: - For audiovisual space: enhance sound field and audiovisual effects - Used in the bedroom: can help treat insomnia - For the office: help you relax and improve working efficiency - Used in creation spaces: to fuel creative inspiration Schumann Wave Generator + Acrylic Box + PSU Features: - This product is Schumann wave 7.83HZ very low frequency generator, features high accuracy and stability. - High stable frequency acquisition elements: high stability pulse chip, precision correction capacitance, precision multi-loop adjustable resistor - Frequency: 7.83Hz - Motherboard Power Supply: DC 15V / 2A - Output power: Peak 20W - The Adapter Power Supply ParametersAC 100-240V 50HZ - Output waveformSine Wave - Schumann Wave Generator Board size: 9 * 5 * 2.5 cm (L*W*H) - Schumann Wave Generator + Acrylic Box Size: 10.2 * 6.22 * 3.8 cm (L*W*H) Package Included: 1 X Schumann Wave Generator Anion Generator With Box (The acrylic box have the protective film)