Runs on Electricity no hassles of heating water on gas or heaters. Can be keept inside the quilt to heat up the quilt or use on low temperature for massaging body parts Gives relief from pain and makes you feel comfortable. A very useful product for the winters Power: 500 watts Frequency : 50 Hz It takes about 10-15 minutes to charge this (Boiling hot) and hotness lasts upto 5 hours There’s nothing like an old fashioned hot water bag to keep you warm at night. It provides soothing comfort with no cords attached. This flexible hot water bag conforms to your body; contains latex. Soothe aches and pains by filling the bag with warm or cold water and placing on the affected area for 10 to 15 minutes. No refill required. max power rated 500w Hotness lasts upto 5 hours after 10-15 min charge. One of the high quality and finest electric hot bag on the market. Brand BestDeals SKU BE372OT1B9374NAFAMZ-94236