Product Details: - Sterilises up to 4 bottles in just 4 minutes based on a 1000W microwave - Fits most bottles, soothers and breast pump accessories - BPA free 100% natural steam steriliser, kills 99% of germs without using chemicals - Contents stay sterile for 24 hours with the lid closed - Lid doubles up as a space-saving sterile surface to help you prepare baby's bottles - BPA free The steriliser has a 4 minute sterilising phase. When the cycle is finished either remove bottles and accessories or leave the lid closed and the contents will stay sterile for up to 24 hours.