Mid ohm tunning fork 136.10 Hz £28.95
The Mid-Ohm is widely considered the classic Ohm frequency, The sound vibration of Ohm is relaxing and energizing, when resonating with Ohm it is said to aid breathing, relieve body tension, assist in meditation and pain management, It's also said to help facilitate yoga poses. 
The sound wave created by the Ohm Tuning Fork works like kinetic energy to move disharmony and tension from the body while restoring a sense of well-being.

Mid ohm 136.10 tuning fork