Atvel F16 Ultimate will pick up debris and mop the floor in one pass. You no longer need to spend time first on dry, and then on wet cleaning. During operation, the vacuum cleaner simultaneously sucks up debris, and the wet roller washes the coating from dust and dried-on dirt. Dirty water is collected in a separate container instead of remaining on the floor. And, what is most important, there are no restrictions in the form of wires!