Thomann 28 "Planet Gong, 28"/71cm,F2 - Platonic Year: orbital period 25920 years; Frequency (Hz): 172.06; Tone difference to concert pitch A A=440 Hz in cents: F - 25.5; octave 47; Color assignment red-violet; wavelength (nanometers) 396; Assignment of the chakras & zodiac signs: 7th chakra, harmonious sound behavior, different sound mixtures by varying the attack point, handcrafted in Germany