The experiment was performed on a window that measured 1.35 meters by 1.35 meters. After that comes the wet washing and water filling, followed by the rearrangement of the items from one side to the other. The duration of the entire process was an hour. I took a cloth made of microfiber and wiped the window for two minutes in order to remove any little spots and corners that I had missed. In spite of this, there will be a need for physical effort due to the fact that he does not wash the frames. Someone mentioned that it had a lot of noise. The sound reminds me of a handheld vacuum cleaner, which is perfectly fine with me because I'm used to it. I strongly suggest that you get it because it is a useful assistant.