1. Natural frequency 7.83 Hz: This device is preset to 7.83 Hz, a frequency associated with Earth's natural resonance. It may help support relaxation and overall well-being, creating an environment similar to being in nature. 2. Quality protective casing: Made from durable ABS material with a transparent acrylic dust cover, this generator combines durability and style. It helps protect internal electronic components from dust and physical impact. 3. Versatile waveform selection: Offers three waveform options—sine wave, square wave, and inverted square wave—to suit various personal preferences and applications. Easily select the desired mode for your intended use. 4. Convenient USB power supply: Powered via a standard USB interface, this device does not require an external power adapter. Use it at home or on the go for flexible, portable operation.