DNA Tuner 432Hz, wooden mallet, dedicated pouch, quartz crystal point, instruction manual. *Not manufactured by BioSonic. Materials: Aluminum alloy, wooden mallet, quartz crystal point. This tuning fork is tuned to 432Hz, one of the ancient musical frequencies known as the "Solfeggio Frequency." Solfeggio frequencies are not used in modern music. They are said to stimulate the brain and body by providing new stimulation, encouraging a shift from fixed thinking to new ways of thinking and revitalizing the brain. 432Hz is considered "cosmic harmony" and is believed to be in harmony with the frequencies of nature and the universe. This frequency is believed to resonate with the rhythms of nature and bring deep relaxation to the human mind and body. While the standard pitch widely used in modern music is A=440Hz, 432Hz tuning uses A=432Hz as its base. This difference means all notes are tuned slightly lower. This slight difference is said to balance the mind and body, purify emotions, and regulate chakra imbalances (the flow of energy between the mind and body).