Keeping cooked meals warm on the go is no easy feat, but with the Electric Bento Box, you can easily enjoy a comfortable and leisurely meal wherever you are. The best electric lunch boxes heat up in as little as 20 minutes, are leak-free, and can be powered by a car outlet, a wall outlet, or (ideally) both. If you're wondering how to keep food warm for lunch, Bear has the answer. Bear has always been working on offering better new life experiences with innovative personal appliances. Bear's Electric lunch box is perfect for the workplace, traveling, and school.