It works well, smartly builds a route, good equipment and a capacious battery. Quietly cleans a 100m apartment and still has half the charge. The robot "with character" is very stubborn. If it hits an obstacle, it does not give up, but drives back and forces the step at full speed. It's fun to watch. There is a good function so that it does not get tangled in the curtains. The app is slow, but it's not terrible. You rarely use it.