Put 4.5L(4.75qts) inner pot over the stove top and bring to a boil and set into outer container, Stainless steel vacuum insulated outer container allows the food to cook thoroughly without fire or electricity while the outside body stays cool to touch, Can keeps hot food around 154F for 6 hours, Save energy Save time, No overcooking and no burn, Dimension: 9.6L x 9.1H x 13.1W 7.3lb,Made in Japan.