High-efficiency PTC heating technology: Adopting energy-saving PTC heating components, which provide protection against overheating. Use low power heating cycle to keep food at appropriate temperature and preserve food moisture. Recommended use: < /span> < /span> p> ; 1. The power of the lunch box is 55W, and the hot meal is brought forward by 30 minutes. 2. The heating time depends on the outside temperature. It takes 20-30 minutes to warm up to room temperature. 3. Extend the heating time when taking food out of the refrigerator. 4. Unplug the power cord before eating. Package includes: 1 x Packaged Electric Food Warmer < p> 1 x 12V Car/Truck Power Socket 1 x 110V Home/Office Power Socket 1 x Extra Plastic Tray 1 x Plastic Spoon 1 x Stainless Steel Fork 1 x User Manual Note: < /p> -base > Heating time may vary depending on the amount of food and temperature. If food is left for a long time, add water and extend the heating time for a few seconds. Choose the appropriate plug