Features: Kill 99.9% of harmful germs and bacteria without using chemicals. Sterilize in just 6 minutes with automatic shut off for speed and safety. Keep contents sterile for up to 24 hours if the lid is unopened. 3-in-1 adjustable modular design allows you to fit a variety of bottles, pumps and accessories. At full capacity, fits up to 6 Philips Avent 11 ounce bottles.