Bring a larger meal wherever the day takes you with this 3.5L electric lunch box for adults. The 2-layer design combines a 2.5L food-grade 304 stainless steel container with a 1L PP container, providing flexible space for main dishes, sides, vegetables, and other meal combinations. A separate 0.45L fruit tray adds convenient storage for fruit or snacks. The dual-mode heating design adapts to different meal sizes. Use the 2.5L stainless steel container alone when you need a smaller portion, or heat both layers together when preparing a larger meal. Keeping foods in separate containers also helps organize different dishes without combining them in a single compartment. Powered by a 100W PTC heating system, this portable food warmer typically heats a meal in approximately 20-30 minutes, depending on the amount, type, and starting temperature of the food. PTC technology provides self-regulating temperature control during operation. Multiple power options make the heated lunch box useful in different settings. It supports 12V/24V vehicle power and 110V household power, allowing it to be used in compatible cars and trucks as well as offices, break rooms, job sites, and at home. It is a practical electric lunch box for truck drivers, construction workers, office employees, and other adults who want access to warm meals away from a microwave. For easier cleanup, the 2.5L stainless steel food container is removable and dishwasher safe. An included cleaning sponge can also be used for hand washing. With its large 3.5L total heating capacity, 2-layer configuration, flexible heating modes, and multi-voltage power options, this electric food warmer is designed for larger portions and everyday meals on the go.