BEST SELLING PACKAGE features one Mid Ohm (136.10 hz) and one Low Ohm (68.05 hz) Tuning Fork, Activator, plus Instructional chart opens to 8 panels of information, including an overview of Sound Healing, information about octaves & overtones, and the easy to follow ’how to’ of practical application! The sound vibration of the Ohm Octave is a potent musical interval, creating movement to help clear blockages and move stagnant energy. Use on tight muscles, reflex and acu-points.