Product Features: The products has been filled with galvanothermy energy conversion agent, which helps it to warm up quickly and keep warm for a long time. Commonly, after charging for 7-12 minutes, it can be used for 2-10 hours, which is 2 hours for hand warming or 10 hours for quilt warming. It has automatic temperature control to avoid being over heated, starts heating when the light starts shinning and stops when the light extinguished. The product is explosion and leaked proof. The protection device installed inside can restrain the air expansion, and the vinyl film and high strength complex fiber guarantee no leakage of the product. Operation Instruction : 1. The manufacturer has filled the product with water and galvanothermy energy conversion agent. 2. Charging for heating: Insert the power cord to the socket on the product, then connect the power. It starts heating when the light starts shining, After 7-12 minutes, when the light extinguished, the product turns into constant temperature status. Turn off the power supply, take off the power cord from the product, You can use the product. Caution: 1. Before every heating, please check the tightness of the water effusion plug, make sure the power socket is upward. Do not charge when the product is sideways or inverted. 2. Please do not use the product when it is being charged. 3. Person who is hypothesis to the temperature in no allowed to use this product. 4. Babies and kids are not allowed to use this product. Quickly and easily keep yourself warm and alleviate your aches and pains with this astounding new generation electric Hot Water Bottle. This amazing item can be ready in just minutes after your pain strikes so there is no extended suffering through waiting. Just plug in the New Generation electric Hot Water Bottle for 7-12 minutes and the warmth and relief will last from 2-10 hours. There is no need to fill the New Generation Electric Hot Water Bottle with water and the soft, warm relief it offers will have you feeling better in no time.