Very useful device if you have a pet. Yes, even without the animal. Well maintains cleanliness in the apartment, facilitates weekly cleaning. Got pros: Mobile app control, smart cleaning movement, app-based cleaning of rooms of your choice, setting no-cleaning areas. Confidently takes thresholds up to 1.5-2 cm. Has cons: At times, the map of the apartment in the application opens for a very long time, the Chinese server is sad and slow with answers, but it can also be fast. I didn’t understand how to put the order of the rooms when cleaning, if the spaces are selected along with the room where the charge is, it will certainly start from it.