This upgraded electric lunch box is designed with 100W high power system, heat food quickly and evenly. There are two plugs, one for Work/Home (110V, 100W), and the other for Car(12V, 80W)/Truck (24V, 80W). Get it plugged about 30 minutes before mealtime for self heating, enjoy your hot meal whenever you want, no more microwave oven and cold meals, ps: better add some water to food for heating up faster.