Tourmaline Wrist Guard Specifications 1. provide OEM,ODM service 2.tourmaline/self-heating 3. 3 pcs biological magnets Main ... pressure. The dilation of blood vessels and increase blood flow to make subcutaneous, strengthen the wrist micro circulation, eliminate muscle ... heart pacemakers, insulin pump, and other electronic equipment were banned to use. 3, cancer and serious patients 4, when using ...