Used, but only a few times. Please refrain from purchasing if you are overly concerned about condition. Purification & Sound Healing Chakra Care Gives Expression and Creativity "Solar Harmonic 8-Piece Set" by BIOSONICS, USA (8 tones: Do, Re, Mi, Fa, So, La, Ti, Do) Playing these together creates a series of overtones, helping you relax and calm your mind. Each pitch is associated with a different state of consciousness and body posture. Each pitch affects the nervous system differently by activating specific elements. When played together, they create a harmony of various overtones, promoting relaxation and concentration, while also fostering growth and refining your musical talent. Based on the natural ratios of the tuners, they help to reharmonize your body through the cellular memory process. Not only can you relax instantly, but you can also develop and refine your sound abilities. It helps to align the proportions of the body through the cellular memory process based on the natural ratios of the tuning forks. The Solar Harmonic Spectrum (full 8-piece set) covers the full octave (Do, Re, Mi, Fa, So, La, Ti, Do). 【6 Frequencies】 Do, C = 256hz Chakra: 1st Re, D = 288hz Chakra: 2nd Mi, E = 320hz Chakra: 3rd Fa, F = 341.3hz Chakra: 4th So, G = 384hz Chakra: 5th La, A = 426.7hz Chakra: 6th Ti, B = 480hz Chakra: 7th Do, C = 512hz Chakra: 8th 【Size/Material】 (Approx.) Total length 180 x width 25 x thickness 9mm Made of aluminum (with pouch and English booklet) * The color of the pouch may change. (Currently purple) 【How to Use】 Gently hold the handle of the tuner and tap the end of the tuner on your knee. In this case, you can hear a pure tone. Hold the handles of two tuners and tap the tuners together twice. In this case, you will hear the sound along with overtones. This sound works around the body's energy field. Thank you for viewing.