The Baby Brezza SuperFast Portable Bottle Warmer is designed to heat water, formula or breast milk with consistent, controlled temperature on- the- go. A high-efficiency 100W heating system warms bottles 67% faster than other portable warmers, reaching body temperature in about 3 minutes for an 8 oz bottle. Four precise temperature presets (80°F, 98°F, 99°F, and 103°F) allow safe warming for all milk types, including formula, water, and breastmilk storage bags, without compromising nutrients.