Features: Experience the calming effects of the Schumann Waves Resonance Generator, featuring adjustable frequency ranges from 0.01-30000Hz for relaxation and enhances well being. This generator offer stable frequency output with square, and reverse square waves option, ensuring consistent performances with setting of 7.83Hz. Ideal for individuals relaxation, improved sleep quality, and increased productivity, this device caters to diverse needs across various lifestyles. Perfect for use in bedrooms to aid sleep, offices to boost efficiency, or creative space to inspire innovation, the Schumann Waves Generator adapts seamlessly to any environment. This portable device is easy to transport, making it addition to your home or travel. Specifications: Component:ABS Frequency: 7.83Hz Adjustment ranges: 0.01Hz-30000Hz Size:Approx.15x14cm/5.91x5.51inch Package Includes: 1Pc Schuman Waves Generator note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.