1. Natural frequency 7.83 Hz: Our Schumann resonance generator is preset to the standard frequency of 7.83 Hz, aligning with Earth's natural resonance. This helps promote relaxation of the body and mind, supports well-being, and creates a calming environment. 2. Quality protective casing: Made from durable ABS material with a transparent acrylic dust cover, this Schumann resonance generator combines style and functionality. It provides effective protection for internal electronic components against dust and physical impact. 3. Versatile waveform selection: The generator offers three waveform optionssine wave, square wave, and inverted square waveto suit various preferences. Choose the appropriate mode for different applications. 4. Convenient USB power supply: Powered via a standard USB interface, this device does not require an external power source. Use it easily at home or on the go.