● Put about 300ml of water into the lower compartment of the lunchbox. Otherwise the lunch box does not work!● Press the power button. The electric lunch box will heater or cooking food quickly.● Once the water used for steaming is completely boiled off, the lunchbox will automatically power off.● Side holes, heat cycle: side edge of the kitchen exhaust vents to promote the full range of water vapor heating, the food heated evenly.● Anti dry burning function, the machine will power off automatic