Update 6/2021: The company recently contacted me and offered me a bribe, subject to changing my rating to five stars. I declined and am reducing my rating to one star. I think you should keep that in mind as you look at the other reviews you read here. You may be biased.--------------------------------------------- -------- ------------------------------ ------Overall fair value for money ratio, but don't expect too much. Some good cleaning power. It has two sweeping brushes to sweep dirt under the vacuum cleaner. There is no rotating brush under the device for a more thorough cleaning. Pretty calm though. There's no way to navigate, it just bumps into objects and gets deflected the other way. What does that mean? The room you run it in might get clean, but you have to hope it randomizes all parts of the room, which might take quite a while. Also, his lack of navigation skills made it very difficult for him to find his way back to his loading base. I could easily imagine that the device would run out of battery before it even reached the base. Would never connect to WiFi despite numerous attempts to help. From what I've seen in other reviews, this is a known issue. Because of this, I can't comment on any of the features associated with it. I ended up returning it as it was of little value other than being new to me. However, I give him credit for helping me understand that the concept was good. I ended up buying a more complete device with navigation and improved cleaning capabilities. I paid significantly more money for it, but it really works, works as an efficient and economical device.