Philips AVENT Microwave Steriliser - much less hassle than a conventional electric steriliser. Up to 4 bottles ready in only 2 minutes. Fits most microwaves. Small size makes it convenient for travel. Clips on the side for extra safety. Contents stay sterile for 24 hours if the lid is unopened. Just add water, load and place in the microwave: 2 min at 1100-1850 Watt, 4 min at 850-1000 Watt, 6 min at 500-850 Watt.;