This necklace is made with the most powerful anisthropic magnetic beads, It is by far the most powerful magnetic necklace available, Strung on heavy duty stainless steel coated wire with easy to use toggle clasp, Most commonly used for discomforts in the neck, shoulder, upper back, and head area, Used to help relieve headaches, sinus problems, Used for optimum energy and balance, Use as desired, remove during sleep, SKU: SEREN147