Most baby bottle warmers work according to the water bath principle. Heat in the container device for the bottle or cup instead of in the pot. This means that you have to fill a thermos with a certain amount of water, and then put the baby food to be heated in the container. Then select the desired program through the LCD display or rotary switch-this is different from the way the device handles it.
Normally, the bottle warmer has a heating function that can be adjusted individually. This means that the device will heat up until it reaches the set temperature or the specified time. After reaching the required temperature, some bottle warmers will switch to keep the bottle warmer mode.