Features 1.Ultra Low Frequency: Schumann wave electromagnetic waves are extremely low frequency, can penetrate any material, is non ionizing radiation. 2.Gold Plated Launch Circuit: The 7.83HZ pulse generator adopts a new optimized circuit design, and the gold plated launch circuit has more stable performance. 3.Upgrade: Schumann wave generator adopts high accuracy multi turn potentiometer, for EPCOS correction electro pneumatic, US ST pulse emission IC. 4.Maintain Meridian Balance: Through the received Schumann wave electromagnetic field and the resonance of the human body's cell frequency, maintain the overall balance of the human body's meridians, thereby reducing the damage caused by EMF ionizing radiation to the human body. 5.Battery Powered: The ultra low frequency pulse generator is battery powered, rechargeable, has almost no voltage ripple and has a more precise output frequency. specificationItem Type: Schumann Wave Generator_x000D_ Material: PCB_x000D_ Built in Polymer Lithium Battery: 850mAh_x000D_ Power Supply: 5V_x000D_ Power Supply: +5V at 0.1A PackageList 1 x Schumann Wave Generator 1 x Charging Cable 1 x Screwdriver