Keeps the temperature very constant. We use it for the baby bottle. The water always has the right temperature and if Junior is hungry I have nurmehr Add the milk powder - shake - ready. No Long screaming because the water must first be boiled and then cooled back down to drinking temperature.
1 star deduction because the device not switch off when there is no water in the tank. This is us already happened several times whereby the heating plate then turns brown because it is too hot.
That is why we have now already purchased the second also.
But for the price you can not expect everything to.
So I would the NUK Baby Food Warmer definitely recommend.