With its pros: compact compared to a conventional vacuum cleaner, the alik has replaceable filters and batteries. Some cons: suction power is weak, suitable only for smooth surfaces such as laminate or linoleum, it is difficult to clean carpets and only in max mode. Max mode eats up the battery in 10 minutes, battery wear is noticeable in a year, before it was 15 minutes. Remove odnushku 40kv meters - there is not enough charge, and the weak mode not very much. Buying a second battery is a must. The attachment of the vacuum cleaner to the pipe was not done in the best way, it dangles, as a result, by the end of the year, contact began to disappear during cleaning and the vacuum cleaner turned off. A year later, the contact of the battery to the case burned out, thanks for not having a fire.