As the first robot vacuum cleaner, this is a godsend. Does the job it's supposed to do very well. The sensor recognizes obstacles well, for the entire time of use it did not crash or fall. It carefully removes long cat hair from the carpet, though not the first time, it increases power somewhere, but in the end it is clean. The charge is enough to clean a two-room apartment. It used to be discharged in the middle of the process, but after recharging it continued from the same place. So, in general, it works without jambs, it’s easy to manage through a smartphone, a useful thing.