The water boilers quickly raise the water to boiling point inside the clear high-grade glass container. The hot water is safely and conveniently drawn off through the integral tap, which is available in a classic chrome or elegant plastic version. There's no need for all that pouring and re-pouring when brewing large volumes of tea, for example, so reducing the risk of scalding. Equally, very small volumes of water – such as for a single cup of tea – are brought to the boil safely and economically. The temperature is variably adjustable and the appliance switches off automatically once the required temperature has been reached.