1) when charging, keep the electric heating bag be flat, first insert the power cord to the warm bag socket, then connect the power plug (operation), charging about 8 minutes, can keep 2 ~10 hours warm.(2) And depend on personal needs, need not wait the light off, you can feel the temperature with your hand, if ok, you can stop charging.Note:(1) charging is completed, please disconnect the power supply(2) When charging your hot water bag you"d better waiting there, avoid charging time is too long lead accident.(3) Don"t touch charging electric power line or warm bag when charging.(4) It is strictly prohibited to powerful break and extrusion, the products are strictly forbidden to warm acupuncture bag surface, in order to avoid surface rupture, causing leakage and leakage.(5)If surface soiled, Please use detergent with soft cloth swabbed, don"t put clean it in water. It is very cute and warmly!We also have other cheap and with good quality commodity, please check our store or contact for recommend and quotation, thanks interest.