We have the NUK Baby Food Warmer for three months now and are very satisfied. Since I did not want to use the microwave for warming the baby food, I decided for a cheap Breiwärmer. The device works on the principle of water. Fill a small amount of water depends on the glass with the bracket and sets the thermostat to the desired temperature. After about 10 minutes, the slurry is then warm enough. We always put the knob in the third-last point and then the slurry was every time just the right temperature. This device is of course slower than a microwave, but the slurry is heated very gently. Positive is to be noted that the device is really very space-saving and well fits into the diaper bag. Since I have already seen a lot klobigere Breiwärmer.