Features 1、Use: Our portable oven food warmer not only cooks lettuce but also leftovers, this is a slow cooker with no dials or timers, this portable microwave can heat most food in 2‑3 hours (frozen food takes more time), but you can take it anywhere. 2、Lightweight and Portable: The mini food warmer lunch box does not take up much space, so you can easily carry it wherever you want, perfect for office, travel, potluck and home kitchen. 3、Multi Purpose: Configure USB 5V, laptop USB, power bank USB are all ok, can be used in picnic, office or car because it is a mini portable oven that can be plugged into the car's cigarette light plug and household socket, whether you are a truck driver, delivery guy, business traveler or offsite worker, grab one and you'll love this amazing mini individual portable oven. 4、Easy to Use: The portable food heater has an automatic temperature control design, no need to worry about overheating the food, when it reaches 50℃, it will automatically preserve the food. Just plug it in and you can do other things that will allow you to use your time more efficiently and is compatible with most flat bottom containers with resealable lids, including glass, plastic, metal and foil. 5、Durable Material: Oxford cloth material structure, strong and durable, aluminum insulating lining, durable zipper to prevent water vapour from affecting power safety and prevent food from spreading, new fabric design, healthy aluminum foil. Item Type: USB Heating Lunch Box Bag Material: Oxford Cloth Gross Weight: 185g / 6.5oz Power Supply Mode: USB (delivered without battery) Package List 1 x Heating Lunch Box Bag 1 x Data Cable