This chakra set contains 7 Meinl Sonic Energy Planetary Tuning Forks, each assigned to a specific chakra. They were precisely tuned in Germany according to the calculations of Hans Cousto's “Cosmic Octave” and tuned to the frequencies of the respective celestial bodies in order to achieve therapeutic effects. The set also comes with a vibration foot for targeted, gentle use and a practical cotton roll-up bag that is ideal for storage and easy transport. - Tuning Platonic year: 172.06 Hz ≈ F3, Venus: 221.23 Hz ≈ A3, Mercury: 141.27 Hz ≈ C sharp3, Earth year / Om: 136.10 Hz ≈ Cis3, Sun: 126.22 Hz ≈ H2. Synodic Moon: 210.42 Hz ≈ Gis3, Synodic Day: 194.18 Hz ≈ G3, - Includes Crown Chakra: Platonic Year (TF-E-PL), Brow Chakra: Venus (TF-V), Throat Chakra: Mercury (TF-ME), Heart Chakra: Earth Ye.