Parts List: 1 x Schumann Wave Generator 1 x USB Cable Highlight description: Versatile Application: Schumann Waves Generator offers sine, square and reverse square wave options. An acrylic dust cover is included to help protect the circuit board Adjustable Frequency: You can customise the frequency from 0.01 Hz to 30000 Hz for greater efficiency and personalisation Stable: The Schumann Waves Generator ensures a stable frequency output with a default value of 7.83 Hz, a sine wave voltage amplitude of 3 V and a square wave voltage amplitude of 5 V Compact and Portable: The Schumann Waves Generator has a compact size of 15x15 cm and is USB powered, making it easy to carry around at home or when travelling Promotes Relaxation: The Schumann Wave Generator emits sine waves to create a relaxing environment and promote a sense of overall happiness Detailed description: Description This product is a 7.83 Hz ultra-low frequency Schumann wave generator with stable frequency output. Comes with a USB cable for easy use. Its compact size makes it easy to travel or take on the go. It helps to relax the body and mind and enhances the sense of happiness. Key Features Adjustable Frequency Range: You can customise the frequency from 0.01Hz to 30,000Hz, easy to use. Stable: This sine wave resonator ensures stable frequency output with a default value of 7.83Hz. Specification Product name: Schumann Wave Generator Material: ABS Size: 15 x 15cm Adjustment range: 0.01Hz~30000Hz Voltage amplitude of sinusoidal signal: 3V Voltage amplitude of square wave signal: 5V Power connector: DC 5.5 x 2.1 Rated power consumption: