Features 1.HiFi Function: Low frequency pulse Schumann wave generator has certain HIFI function, and the level of HIFI equipment should not be too low. 2.Sound Change: Low frequency pulse Schumann wave generator can hear and distinguish the sound change caused by different wires in the same system. 3.Extremely Low Frequency: Schumann wave electromagnetic wave is extremely low frequency, which can penetrate any substance and belongs to non ionizing radiation. 4.Keep Healthy: People who are easy to resonate with Schumann Bo are always charging, naturally full of energy and healthy. 5.Reduce Damage: Schumann wave generator can maintain the overall balance of human meridians and collaterals, and reduce the damage caused by EMF free radiation to human body. specificationItem Type: Schumann Wave Generator_x000D_ Material: PCB_x000D_ Power Supply: 5V_x000D_ Power Supply: +5V 0.1A PackageList 1 x Schumann Wave Generator 6 x Acrylic Plate 1 x Charging Line 10 x Screw 5 x Nut Note1. Recommend purchasing two sets for trial (effect)._x000D_ 2. Place the product on the speakers during the trial period._x000D_ 3. Please use an independent regulated power supply for each unit to avoid mutual interference between multiple shared power supplies and to facilitate independent placement.