Each and every detail of BORK kettle is carefully selected, formed and crafted from the highest quality materials. Ceramic is an eco-material, one of the oldest used in cooking for many centuries, which is also eco-functional, as it retains heat for long delivering naturally a keep warm function. The special BOIL first function allows you to boil water first, and then lower water temperature to brew with the best flavor any tea of your choice. A multiple temperature choice is shown in the high contrast display, completing the design of this masterpiece which combines magnificently a traditional material with a very futuristic design.