Washing windows making tended to be less fun. And then came the gift of the parents in the form of Kärcher. Well, you give just practical. But then came the first application. After simple assembly, recharge battery and recently the manual study it went off. Spray on and remove the disc with water incl. Cleaning concentrate, short wiping machine. It was literally a miracle. Crystal clear panes without stripes, everything sucked completely. And then the windows were cleaned throughout the home, to mirrors and other smooth surfaces. I have in-laws made apology, because I do not want to miss the device. A great patent, easy to handle, class results, without dripping on the floor. If there were the Kärcher would have received from me 6 stars.