The transmission frequency is no longer fixed at 7.83, but ranges from 0.01-99999Hz, with a step value as accurate as 0.01Hz, surpassing past limitations and providing customers with more adjustable frequency options. Combination of multiple waveforms; No more confusion about whether it is a square wave or a sine wave or whether it is only a Schumann wave. Full-color touch screen, all waveforms can be accessed with one touch. Convenient and quick display, The device is equipped with a smart color touch screen, which displays the corresponding band according to the frequency, and can directly access a, β, and Y with one click. It is simple to operate and flexible to use. You only need to press the screen button to access it with one click. Even novices can easily master it. Product name:Schumann wave generator (adjustable frequency) Product model:DP-BTCMPDK Product size:10x80x20cm Output interface:3.55mm AUX headphone jack The product appearance and printed words may vary depending on the batch, but this does not affect use. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Voltage:AC110V Colour:As Shown Material:acrylic Package Contents: 1 * schumann resonance generator 1 * adapter