Features 1.Experience Relaxation and Better Sleep: Schumann wave generator utilizes DSP signal synthesis technology to generate Schumann waves, promoting a soothing and calming environment for better sleep and relaxation. 2.Improve Overall Well Being: By emitting Schumann waves, this generator helps to enhance your perception, improve mood, and relieve stress, contributing to a healthier and more balanced life. 3.Easy USB Power Supply: With a 5V USB interface, this schumann wave generator can be conveniently powered by various devices, allowing you to enjoy its advantages anytime and anywhere. 4.Compact and Portable Design: Made with acrylic and PCB materials, this generator boasts a compact size of approximately 100 x 86 x 15mm / 3.9 x 3.4 x 0.6in, making it easy to carry and use in different settings. 5.Power Output: 7.83HZ ultra low frequency pulse generator output using HiFi drive amplifier circuit, stable output power. specificationItem Type: Schumann Wave Generator Material: Acrylic, PCB Product Size: Approx. 100 x 86 x 15mm / 3.9 x 3.4 x 0.6in Signal Source: DSP signal synthesis technology Power Supply Voltage: 5V (USB interface) Rated Current: 0.5A PackageList 1 x Schumann Wave Generator 2 x Acrylic Stand 12 x Acrylic Screws 4 x Acrylic Nuts 1 x Power Cable NotePlease allow some error due to manual measurement.