Advanced Resonance Technology: Experience the benefits of the natural Earth frequency with our Wave Generator. Emitting a 7.83Hz frequency, this device helps in creating a balanced and relaxing environment, mimicking the Earth's natural resonance High-Quality Square Wave Output: The generator produces a clean and stable square wave output, essential for effective resonance generation. This feature ensures consistent performance and reliability for all your relaxation and EMF protection needs Versatile Applications: Ideal for improving sleep, enhancing meditation, reducing stress, and providing EMF protection. It's a perfect tool for anyone looking to improve their overall well-being through the power of frequency therapy Due to different batches, there may be differences in product appearance and printed text, which not affect use Color: Black Material: PCB Package Contents: 1 * Wave Generator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.