Features: Enhances performances with our Schumann Resonanced Board, for computer accessory optimizes your systems stability and efficiency. This board ensures durability and reliabled performances, making it essential component for enthusiasts toolkit. For both men and women who passionates about building and customizing their own PC, this product to DIY enthusiasts. Perfect for home offices, gaming setups, or workstation, the Schumann Resonanced Board enhances your computing environment by reducing electromagnetic interferences. Elevates your PC building experience with this accessory, to seamlessly integrate into various computer while enhancing overall system performances. Specifications: Item: Schumann Generator Size:about 15x14CM/5.9x5.51in Frequency ranging: 0.01 to 300000Hz Defaulted frequency: 7.83Hz Power supply voltages: 5V Color: mainly green Material:Metal+Plastic Package Type:With Enclosure/ Without Enclosure Package Includes: 1PC Adjustable Schumann Generator 1PC Acrylic Shell 1PC USB Data Cable note: Due to problems of lighting effect there will be certain tolerances in product, please understand. Please allow 0-1cm error due to manual measurement.