Using constant temperture heating, heat insulation dual function, insulated lunch box enables food to maintain temperature for long periods of time.Heating time depends on the food temperature and indoor temperature.(As long as 20 minutes can reach 55 degrees Celsius. Locking around the close fit, to ensure product sealing. You can do anything with the electric lunch box, but you do not have to worry about food dumping. Dual Functionality- There is a fixed barrier,food can be perfectly placed separately and will not affect the taste.At the same time there is a removable container and a separate lid,heatable electric lunch box is convenient to bring food out and the lunch box is also easy to clean. PORTABLE AND SAFE - The heating lunch box is suitable for people who are busy at work or in school, also during travelling. Don't hesitate to place the order. And the waterproof design of the plug port can keep portable electric lunch box from the water while not in use.