The Breville Smart Kettle Pure knows the ideal temperature for tea and that different types of tea brew best at different temperatures. Choose from five different variable settings to brew the perfect cup of tea. It has a soft opening lid that slowly releases steam and prevents splashing. The kettle automatically turns off and has a keep warm feature that keeps the heated water at the selected temperature for 20 minutes. . Slow lid release. 5 temperature settings. Keep Warm Function holds the temperature of the heated water for 20 minutes.