The vacuum cleaner is good quality and cleans well. It's cool that he can build a map of the room, remembers where everything is in the apartment and does not crash into furniture and objects. Definitely worth the money in my opinion. It is controlled through an application on a smartphone, I quickly figured out what was happening there, I set a cleaning schedule. It does not discharge for a long time, the charge is enough to clean the entire three-room apartment. I am happy with the vacuum cleaner.