The smart kettle can handle temperatures from 104 degrees all the way up to 212 degrees Fahrenheit, and can heat up to 0.8 liters of water in less than five minutes. Because it’s got 4 easy presets and a Keep Warm control, you can brew it straight to a preferred temperature, especially when it comes to certain teas that require a special brewing temp, maintaining the Keep Warm designated temp for up to two hours. Also: The best tea kettles: Your daily caffeine, served hot or cold The stainless steel tea kettle automatically shuts off when the water is dried out, and it comes with an NTC temp sensor to automatically stop when the water reaches your preferred temperature, too.