Vingud electric lunch box contains 2 plugs: 110V for home/office use, and a 12V/24V power cord for cars/trucks use. About 20-30 mins to warm up meals. You don't have to stand in line and microwave your food. People who work outdoors cannot use microwave ovens, such as car/truck drivers, and construction workers, can now heat and enjoy warm lunches anytime, anywhere.White elephant Christmas gifts for men women THIS ITEM IS NOT INTENDED FOR USE BY CHILDREN 12 AND UNDER.