- The Inventum coffee machine KZ818D makes delicious filter coffee. The device has a capacity of 1.2 liters and is suitable for up to 10 cups of coffee. The external water level indicator shows you exactly how many cups of coffee the reservoir is filled with. The coffee strength is easy to adjust. The drip stop ensures that you can remove the thermos from under the device without drops falling on the plate. In addition, the coffee maker is equipped with a timer with which you can easily set when the coffee should be made. This way you always have a nice cup of coffee at a time that suits you best. When the coffee is ready, the machine switches off automatically.