The case when there are no problems. Turned it on and everything works. I built the map for a long time. 7 times I cleaned the house completely before I built it. Was not seen in dullness. But it is advisable to look through the rooms before cleaning for the presence of socks on the floor, shoelaces and other things. If something is stuck in the brush, it immediately warns. The water container is enough for the whole house (120m). As well as battery charge. The whole house is cleaned in about 1.5 hours. It moves in a different way. Either parallel to the walls, or diagonally. So I don't understand what it depends on. The map is built on dibile. The diagonal location of the map causes great difficulties if you want to select a cleaning zone. All messages and warnings are in 2022. And even without a Chinese accent)). Outcome. Of course, this greatness of Chinese engineering will not replace general cleaning, but it maintains cleanliness well. It's so good that it finds dust where it doesn't seem to exist))) and another drawback associated with the design. The vacuum cleaner charging contact is located directly behind the side brush. Because of this, it gets dirty and stops charging and being detected in the application. In general, after about 10-15 cleanings, I wipe the contacts with a dry cloth. But in general, a very useful thing. I recommend.