The Karcher SE 4.001 is a spray extraction cleaner for carpets and hard floors. With the supplied accessories you also use this Karcher as a wet or dry vacuum cleaner. The added value of a spray extraction purifier is that the nozzle comes into fiber carpet and coating and that drying is 50% faster than with a steam cleaner. Ideal for example to clean car upholstery or mattresses. When you get dry dirt, use the dust bag supplied. Wet dirt comes in the 4 liter water tank and you simply empty above the sink.