- Multi-wave oscillator technology The Raumvital Energy Disc is based on the Multiwa ve Oscillator developedby Georges Lakhovsky around 1920, which, in conjunction with a bipolar Tesla coil, was to revolutionize the healing methods of the time. Our Energy Disc is a passive antenna that is used without a power supply. - 5 PACK - Pendant diameter: 35mm/1.384inch. Thickness: 1.2mm. - Natural Energy Harmonization – Inspired by Georges Lakhovsky's groundbreaking research, these real gold-plated convert negative vibrations into positive, healing energy - wrapped: come with a velvet bag