The Silver Pulser conforms to the specifications of the physicist who designed the technology. The unit operates with a nominal 31 Volt Peak, Bi-Phasic Square Wave, with a frequency of 3.92 Hz per half cycle, +/- 1 Hz. (Each half cycle outputs  the Earth frequency of 7.83 Hz.)An internal booster circuit is used to output the 31 Volts from only one 9-Volt battery. This feature keeps the Silver Pulser small and light.The unit operates at a constant voltage as the battery weakens. This feature ensures the voltage does not decrease as the battery wears out.The Micropulsing electrodes are made from conductive rubber.The Silver Pulser is covered by a three-year warranty.The Silver Pulser is CE certified. This is a European standard that indicates an electronic unit conforms to essential safety requirements to operate as a household consumer product.