The Zojirushi 4 litre water boiler and warmer delivers as advertised - constant hot water at 4 different temperature settings (208F, 195F, 175F or 140F) of your choice. Unit swivels on base. Convenience for those making lots of hot drinks and for cooking. The nonstick coating of the container is easy to clean and does not build up as the stainless steel containers in other cheaper brands. Very good control panel that includes boil light, reboil button, temperature set button and keep wam light. Dispensing hot water is simple once the unlock button is pressed (automatically locks afterwards). The power cord is like the magnetic one used in Apple laptops that detaches easily and without causing damage. Note the following features that are less well-known. (1) Constant on means hourly energy consumption of between 51W - 21W, depending on whether water is kept warm at 208F or as low as 140F. (2) Timer button is an energy-saving feature that allows you to shut down the boiler with restart, starting at 6H, 7H'10H. You have to manually set this each night - so no automatic timer built-in. One final note is that this is not a kettle that will boil hot water available in a few minutes. This boiler heats the water up to 208F before lowering the temperature to the set level - something that takes roughly 30-45 minutes. Easiest way to avoid waiting times in the morning is to fill up the Zojirushi at bedtime and set the timer. Only have had it two weeks so durability and lasting quality of built not yet known. Expensive but much more versatile than a quality electric kettle.