The Butterfly hematite magnetic necklace will reduce  or even eliminate the pain associated with spondylosis, frozen shoulder,  whiplash injury, migraine and tension headaches. This beautifully designed magnetic necklace is made from the purest black hematite stones and is totally hypoallergenic. It contains 13 x 1200 gauss magnets (1560 mTesla) that are cleverly encapsulated within the beads and measures 18 inches long. The Butterfly magnetic necklace uses strong trigger clasp to ensure that it sits securely around your neck at all times, making it very easy to put on and to remove.