Features STABLE FREQUENCY: Schumannwave pulse generator adopt DSP sign al synthesis technology, with stable sign al and high frequency stability, you can use with confidence MULTIPLE USES: Schumann resonance generator can be connected to an external oscilloscope to observe waveforms. Can also be connected to the external speaker, hand touch feeling waveform vibration BENEFIT TO HEALTH: The schumannwave generator benefit people physical and mental relaxation, improve body perception of sound and images, and improve health of human body TECHNICAL PARAMETERS: The schumannwave generator is powered by a USB interface with a voltage of 5V, rated power of less than 1W and frequency of 7.83Hz RELIABLE TO USE: Ultra low frequency pulse generator ensure accurate working with a good durability and wear resistance, you can use for a long time 1. STABLE FREQUENCY: Schumannwave pulse generator adopt DSP sign al synthesis technology, with stable sign al and high frequency stability, you can use with confidence 2. MULTIPLE USES: Schumann resonance generator can be connected to an external oscilloscope to observe waveforms. Can also be connected to the external speaker, hand touch feeling waveform vibration 3. BENEFIT TO HEALTH: The schumannwave generator benefit people physical and mental relaxation, improve body perception of sound and images, and improve health of human body 4. TECHNICAL PARAMETERS: The schumannwave generator is powered by a USB interface with a voltage of 5V, rated power of less than 1W and frequency of 7.83Hz 5. RELIABLE TO USE: Ultra low frequency pulse generator ensure accurate working with a good durability and wear resistance, you can use for a long time Spec: Item Type: Schumann Resonance Generator Antenna Waveform: Sinewave Interface Waveform: Sinewave, squarewave, inverted squarewave(output interface in the lower left corner, waveforms output simultaneously) Rated Power: Default Frequency: 7.83Hz Adjustable Frequency Range: 0.1Hz-30000Hz How to Use: Take out the product and use directly PackageList: 1 x Schumann Resonance Generator 1 x Power Cord Package List 1 x Schumann Resonance Generator 1 x Power Cord