The Zyliss Handheld Electric Milk Frother efficiently froths milk for cappuccinos, lattes, or shakes. Heat a small amount of milk, place the frother into the cup until it touches the bottom, then turn it on. In just 30 seconds, your milk will triple in volume! This electric frother is compatible with hot, cold, fresh, powdered, and UHT milk. It operates on two AA batteries, which are not included.