This tuning fork creates a pure tone of 432hz, a frequency that humanity has considered to be instinctually musical. Musicians from antiquity up through the early 20th century have tuned their instruments relative to this pitch due to its natural appeal to our sense of comfort, musicality and beauty. What's remarkable about this frequency is how it has transcended culture and time as both tibetan singing bowls and Giuseppe Verdi's operas were tuned relative to this frequency. With this tuning fork, you can transport yourself outside of 440hz tuning standard of our modern day culture and retune your mind back to more naturally pleasing state.