Perhaps my review is a bit biased. Before that, I took another robot vacuum cleaner for almost the same price, with a bunch of good reviews on the market. So he went around the room without any system whatsoever. In one place he could drive 10 times, and in another, not a single one. He was not able to independently return to the base from the next room, and after some time he began to consider the black cells on the carpet as holes and refused to go there, after which he safely lay down on a shelf. After that purchase, I was disappointed in principle with robots, I decided that they were still far from fully autonomous operation. And this robot just seemed like a fairy tale in contrast, so to speak. I use it additionally as an alarm clock, it's noisy, but basically cleaning takes place when no one is at home, so this is not a problem. Still bring coffee in the morning)