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RE: Graphene Heating Eye Mask - Mask for Better Sleep, Brain Activity & Eye Care
I find it interesting and at the same time dangerous to have that in the face connected at night and who knows if an electrical accident can happen.
Don't worry, even if its auto shut off functions fails 5 volts can't even cause tickling on the face and the highest temperature of 45°C has soothing effect and would cause no harm.