The device heats the bottle / glass ... but with larger glass (ie a empfollene the manufacturer amount) you need after the Bed.Anleitung even more water. Here the boiling water from the machine squirts out, even if the ring is placed around the glass. It makes a Saurei on the table and there is no water to warm up. Reheating is only after a long time to be because the controller in the device will probably be disabled on a PTC, and must again pointing to the conductive temperature cool. In other words: When the glass was not warm enough - bad luck :(