1.Rechargeable for 500 times 2.Mini cute shape; 3.CE/ ... OFF, .for low temperature, .for high temperature.When the warmer is ON, then the LED indicator turns red, at the ... in a dry place.During use and storage, if the warmer appear abnormal phenomena such as smelly, hot, discoloration, deformation ... electric blankets, stoves and so on. hot pack pad electric USB li-battery hand warmer CE & ROHS approved