Features: Experience the calming benefits of the resonance with our 7.83hz pulse generator, designing to enhances your well being by emitting low frequency pulses that promote relaxation and stress relief. Crafted from abs materials, this portable fm783 model offer a lithium battery power solution for creating a serenes environment, whether at homes or on the go. For audiophiles seek to refines their listen experience, and individuals look to improves sleep quality and overall health. Transform your bedroom, office, or personals space into a sanctuaries of peace with this generator, aiding in better sleep and heightened concentration during work or study. Elevates your sound visual perception and embraces a healthier lifestyle with the fm783; it's for anyone seek a harmonious balance between technology and nature's rhythm. Specifications: Component:ABS Color:Black/Green Size:Approx.12x12cm/4.72x4.72inch Package Includes: 1 Set Pulse Generator note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.