Description: Efficient Wireless Heating:This lunch box features a powerful 4000mAh battery with a heating power of 40W, allowing you to heat your meals without the need for an electrical outlet. Enjoy warm meals anytime with its convenient wireless designOptimal Temperature Control:Designed to heat up to a maximum of 65C, this lunch box maintains your food at an ideal temperature without overcooking. Please note that it is intended for reheating purposes and not for cooking food.Quality Materials:Crafted from durability steel and food grade pp, this lunch box ensures long term use while keeping your meals fresh and flavorful Portable and Friendly Design:With dimensions of 24.5*12.3*9cm/9.65inchx4.84inchx3.54inch, this Heating Lunch Box is compact enough to fit in your bag yet spacious enough with a capacity of 1L (1000ml)Quiet Operating:Using this Electric Lunch Heater Food Warmer to experience silent heating that avoids any awkward noise in quiet environments like offices or libraries Specification: Battery capacity: 3.7V 4000mAhBattery voltage: 11.1vInput voltage: 5vInput current: 2.5AHeating power: 40WRated capacity: 1LCharging time: 6-8 hours Size Chart: 24.5cmx12.3cmx9cm/9.65inchx4.84inchx3.54inch Package Includes: 1 Electric Heating Lunch Box1Charging Cable1 carrying bag Note: Please allow slightly errors due to manual measurement and different monitors.