Laboware is presenting the product best in quality,The Otto Tuners are different octaves of the note "C" in the Pythagorean Scale, also known as the Just Scale. They are the 3 octaves below middle "C" and vibrate at fewer cps (cycles per second) "C" notes of the Harmonic Spectrum Set. They resonate with the deeper tones of the Earth and can be very effective when placed on the rib heads, spine, sternum, sacrum and ilium. The sound vibrates directly into the bones to relax, align and restore "tone" to body tissues.

Available in three frequencies:

C - 32 Hz

C - 64 Hz

C - 128 Hz