Excellent value on a vacuum cleaner. The application functions, and the version is universal. He creates virtual walls, maps, and other things. I wished to speak with Alice. Wet cleaning is effective and the cleaning quality is good. Curtains and obstacles are everywhere. some drawbacks A wet cleaning session takes an hour of batteries. On the wheels are wrapped wires. The wheels cannot be taken off. The filter is already clogged and only 80% of the brushes are usable, thus the program does not adequately display their resource. It is obvious that the value is really a pretense. They fit wonderfully even if I didn't purchase the original filters.