After a year of work. Great device, does the job perfectly. Bought on the advice of the children, both my daughter and my son have these. In the current conditions, it will be difficult to buy a filter, but it can be washed, etc., etc., but sooner or later you will have to buy a new one. At least buy it on vacation abroad . My wife mostly uses it, I prefer iRobot. Its pros: Light weight, brush with laser surface illumination, sufficient battery capacity for cleaning 76 m2, good dust suction power. Its cons: There is no maintenance description, it is not enough to clean the dust collector by shaking it out.