The Meinl planetary tuned energy chimes are made using the calculations of Hans Cousto (The Cosmic Octave) to match the frequencies of the sun, moon, and planets. Each one is tuned to produce the corresponding frequency of the celestial body. These energy chimes have been handcrafted from silver anodized aluminum alloy and designed for use in therapeutic applications. This energy chime includes a wooden beater, hot-branded logo and tuning info. Made in Thailand. The Sidereal Moon energy chime is tuned to 3638.88 Hz / A7#.