This is a Sonifer SF-1517 electric heating lunch box, designed to warm food at home or in a vehicle.
It features a 1.8-liter capacity stainless steel liner and includes a removable container for versatile food storage.
The lunch box operates with 80W power for fast heating and includes a 3-in-1 design supporting 12V/24V car and 220V home voltages. [1, 2, 3, 4, 5]