Product Dimensions: 3.5cm long This pendant is also known as the "Migraine Pendant". It was designed by Dr. Karim to help balance energetic disturbances and pain in the head caused by electro-stress, as well as other electro-sensitivity symptoms. *Chain not included *BioGeometry is not a form of medical diagnosis or treatment, but a long-term environmental support for the body’s energy system and all types of treatment.