One-touch means itu0026#39;s fast and easy to use. Electric warmer retains vital nutrients unlike microwave warming.nWarm breast milk, formula and baby food evenly and safely.nSterilizes bottles and pacifiers in just minutes! The One-Touch Warmer fits ALL sizes, shapes, and brands of bottles!nIncludes built-in measuring cup and lid. Hassle free One-Touch operation!nElectric means no batteries needed!nThe 2-in-1 design of the Nuby Bottle Warmer allows you to safely and easily warm breast milk, formula and baby food. Or, use it as a quick and easy sterilizer for bottles and pacifiers. Simply use the measuring cup (included) to add water, load the sterilizer, and touch the button to start.