The Philips AVENT Fast Baby Bottle Warmer gently warms bottles up to 11 ounces quickly. As an example, it heats a 5 ounce bottle in as few as 3 minutes. Milk circulates continuously while it's warming, so the warmer - unlike a microwave - won't cause hot spots. The warmer can be used not only to warm milk, but also to defrost frozen breast milk and baby food. It is compatible with all Philips AVENT bottles, bottles from most other leading brands, and baby food jars. Set it and forget it. Sensors automatically adjust the heating pattern for different milk volumes and starting temperatures, so the warmer hits the right temperature every time with the push of a button. It also keeps milk warmed to the desired temperature for up to 60 minutes. After 60 minutes it automatically shuts off to prevent overheating. The front panel is intuitive and easy to read with clear guidance on setting by milk volume for accurate results. A progress light lights up in three segments, indicating the warming progress and when milk is ready. Always test milk or food temperature before giving to babies.