Claims are more likely not to a specific robot, but to the category of window cleaning robots. Don't expect a miracle. The quality of washing directly depends on the detergent used. You need to be somewhere near the robot to install / remove from the window during washing (i. E. it will not run the scenario with automatic washing while you are not at home, as is the case with a robot vacuum cleaner). Almost all washing robots are wired, which means that there should be an outlet within a radius of 2-3 meters from the window.