According to the manufacturer, not only does the pendant protect you from the harmful effects of electromagnetic fields, but it can block "other negative energies like fear and doubt - even the negative thoughts of others!" The pendant apparently "emits a frequency of 7.83 Hertz," which the manufacturer says has a "profound healing effect." The MegaChi pendant can also eliminate stress, attract abundance and help you to "manifest what you most desire." Costs just $249.95.