- The Whisper Boil function on this Dualit kettle won't wake up the whole house when you make your morning cuppa - Its 1.7-litre capacity gives you enough hot water for 6 cups - great if you've got friends or family over - The removable filter keeps limescale out of your drinks, so your tea and coffee taste better- Its two water windows mean you can measure the water by cups or litres- With built-in cord storage, your counter stays neat and you're not wrestling with wires