The standout feature on the J20 is an innovative mop pad, set on a roller like the wheels of a tank, which works extremely well. It's very much a premium option, but the performance is excellent. They can handle various floor types, from carpets to hardwood. Some even have self-emptying https://bookmark-media.com/story19573412/uma-an%C3%A1lise-de-top-3-automatic-vacuum-cleaners