Antique Tibetan singing bell "All Buddhas," metal. Tibet, 20th century.The handle of the singing bell is half a vajra, the mythical and ritual weapon of the god Indra, a scepter with spheres, and a symbol of yin and yang. All Buddhas are all enlightened, awakened beings who reincarnate to save humanity. The concept of "Buddha" is one of the eight ranks of deities in Buddhism.