I bought it in amazon for 10 k. When you remember that the device was bought for that kind of money, all claims disappear. He works as he pleases. Once turned on at 3 am. He doesn’t build a map of the room, he doesn’t remember it in the system, and every time he still randomly goes through the room an infinite number of times until the battery runs out. Wet mopping is dry mopping if you don't remove the cloth and wet it yourself. He gives it so little that you can’t even call it wiping the floors. True, in the wet cleaning mode, he eats very little battery. So it rolls indefinitely until 20% remains. Then another quest begins - the search for the base. We have it lasts from 5 minutes to infinity. What does the base cost according to the manufacturer's requirements (30 cm on the right and left +1.5 in front). It stands under the table, maybe that's why it wanders for such an amount of time, as for me it's a lot. Given the cost, everything is forgivable. That is why 4 points.