Following the recommendations of our suppliers, this warning applies to you or anyone in close physical contact with your mask. Keep mask magnets at a safe distance of at least 150 mm (6 inches) from implants or medical devices that may be affected by magnetic interference. Medical implants/devices, including those listed in contraindications, may be … URGENT SAFETY NOTICE MASKS WITH MAGNETS – POTENTIAL MAGNETIC INTERFERENCE WITH CERTAIN MEDICAL DEVICES