Microwave steam sterilizer ready in just 2 minutes: The microwave steam sterilizer can be used to sterilize baby bottles and other products in just 2 minutes. The exact length of the cycle depends on the wattage of your microwave, of course. 2 minutes at 1200-1850W, 4 minutes at 850-1100W, 6 minutes at 500-800W. Contents stay sterile for up to 24 hours: Contents remain sterile for up to 24 hours if the lid is unopened. terilizes standard neck and wide neck baby bottles: The sterilizer sterilizes standard neck and wide neck baby bottles. Up to 4 Philips Avent baby bottles can be sterilized at once. Lightweight design for sterile baby bottles on the go: The sterilizer's lightweight and compact design makes it easy to take along with you wherever you go - holidays, visits to relatives etc. Now you can always have sterilized baby bottles and other products within easy reach. Fits most microwaves on the market: The microwave steam sterilizer has been designed to fit practically all microwaves on the market, keeping baby bottles and other products sterile wherever you are.