This product includes a Schumann resonance generator, an acrylic case with a small magnet, and a USB data cable. Note: The acrylic case may have a slight adhesive odor, which will dissipate when placed in sunlight or a well-ventilated area for 2 to 3 days. It is recommended to remove the protective film before use. With an adjustable frequency range from 0.01 Hz to 100,000 Hz, this sine wave generator allows customizable settings to meet various needs, enhancing efficiency and personalization. The default frequency is 7.83 Hz, and it can be adjusted to other frequencies such as 174 Hz, 285 Hz, 396 Hz, 417 Hz, 528 Hz, 639 Hz, 741 Hz, 852 Hz, and 963 Hz. The o frequency generator offers multiple waveform options, including sine wave, square wave, and reverse square wave, making it suitable for a wide range of applications in environments such as laboratories and studios. The Schumann resonance generator emits sine waves that may help create a calm environment and support mental well-being. Its compact design makes it a thoughtful gift for loved ones on occasions such as birthdays and holidays. The signal generator measures approximately 5.9 x 5.5 x 1.2 inches, and the acrylic case measures approximately 6.2 x 5.8 x 1.5 inches, providing a secure fit. Its compact size and USB-powered operation make it convenient for home use or travel. Stable and reliable performance: The default output frequency is 7.83 Hz, with a sine wave voltage amplitude of 3V and a square wave amplitude of 5V, ensuring consistent and accurate signal output. Wide application: Suitable for various settings requiring signal generation and frequency adjustment, including electronic testing, equipment calibration, and scientific experiments. Frequency range: 0.01 Hz to 100,000 Hz Default frequency: 7.83 Hz Power supply voltage: 5V Sine wave voltage amplitude: 3V Square wave voltage amplitude: 5V