The robot is very cool. It has been working for about 2 months and we do not see grief. A charge of 56 square meters is not even enough to head. The charge after the lesson does not even reach 70% We have a cat who goes to the toilet according to his mood and at some point there was an embarrassment with a robot (which works at a certain time and is cat-he-he) But in the end, everything is fine, everything was removed, the robot is disassembled into parts that we safely washed. The robot works from Wi-Fi or by pressing the "clean" button