Feature:1. For Relaxation: Schumann wave generator, which acts on the spatial environment, relaxes the body and mind, and improves the perception of sound and images.2. Adjustable: Schumann wave pulse generator has adjustable frequency range, adjustable range of 0.1Hz30000Hz, to meet your needs.3. Anti Interference: 7.83Hz Schumann wave generator, the use of digital circuit crystal oscillator frequency reference, more stable and anti interference.4. Antenna And Interface Waveforms: Schumann wave pulse generator uses a perfect combination of antenna waveforms and interface waveforms, providing a variety of options.5. Energy Saving: Ultralow frequency pulse generator adopts 5V power supply voltage, low power consumption, energy saving and environmental protection, can be used for a long time.Specification:Item Type: Schumann Wave GeneratorMaterial: PCBAntenna Waveform: Sine WaveInterface Waveform: Sine Wave, Square Wave, Inverted Square Wave (The lower left corner is the output interface, waveforms are output simultaneously)Power Supply Voltage: 5VRated Power Consumption: andlt 1WDefault Frequency: 7.83HzAdjustment Range: 0.1Hz-30000Hz.Package List:1 xSchumann Wave Generator