The vacuum cleaner is not very heavy, but not a fluff. I won’t say that it very strongly, but for a non-running room it copes with the task of cleaning. There are enough batteries for a two-room apartment building, vacuuming a room takes 5-7 minutes. For a vacuum cleaner in the built-in closet put a socket. In general, a solid 4+. Different pros: The first is the absence of a wire, which means high mobility of movement. You can vacuum and vertical surfaces, lintels. With wired such desires do not arise. The second is an absolutely ingenious idea to combine the attachment of the vacuum cleaner and charging: you put the vacuum cleaner in place and charging starts immediately (controlled by LEDs on the body of the device). Comfortable handle - allows both vertical and horizontal grip. The first vacuum cleaner that does not cause disgust to vacuum. And most importantly - everything looks like: I noticed a mess, took a vacuum cleaner, buzzed, shook out the garbage, put it in its place - and it is already infected. Soul delight. Its cons: Brushes. The regular crevice nozzle is not very good, there is no round clothes nozzle, and most importantly, brushes from other models are not suitable. If there was a richer choice of nozzles, I would have bought it, but, alas, there is nothing - a complete vacuum. No storage organizer.