The Philips HD4649 has a handy cup indication, so you can easily determine for how many cups of tea you're boiling water. Water can be boiled rather quickly thanks to a boiling time of 1 minute and 52 seconds. Thanks to the double-walled casing, the boiled water will stay at the desired temperature longer. With a capacity of 1.7 liters, you can boil water for 7 cups of tea. Useful for when you're having visitors.