Works fantastic.

I've had several robot vacuums all makes and models and the X60 is the best. I actually have 2 of them and they never malfunction. However, once a week, I do turn it upside down to dust and clean all the sensors, I vacuum or blow out the little filter after each use and after every 5 uses I wash the filter and place it on a heating vent to dry. While they are drying I put in a new filter. I have hard wood floors and both vaccums are programmed to go over twice each. Once vertically in one's horizontally. They do a really great job!