... care 3.CE approved 4.1 year warranty Wrist magnetic band wrist care productF-8403 Self heating slimming instrument (For knee ... -bio-functional materials made of high-tech products, with the dual thermoelectric and piezoelectric effect, form a resonant magnetic field resonates ... , weak wisdom ,disability to self manage the life . Wrist magnetic band,wrist belt,beauty tool,wrist care product