Thomann 40" Planet Gong, 40"/102cm, G#2 - Neptun, Neptune: 164.7883 years orbital period, frequency (Hz): 211.44; Tone difference A = 440 Hz for the pitch in cents: Gis + 31.3; octave 40; orange colour mapping, wavelength (nm) 645, Mapping the chakras and zodiac signs : 1 / piscis, harmonious sound behaviour, various mixtures of sound by varying the attachment point, handcrafted in Germany