Purchased a few years ago and used in the microwave twice. The microwave needs to be used at 700W or less. I used it when I wanted a little bit of porridge, and I think it worked well at 500W + 200W. I was also able to make delicious, freshly cooked single-serving rice. As a bonus, I'm including two items (unopened): a baby food portioning pack for freezing and a squeezable pouch stand (purchased December 2023). Please consider purchasing if you understand that this is a used item.