Compared with conventional methods, cleaning with the WV 1 Window Vac from Kärcher is streak-free, effortless and three times quicker. The water is suctioned away from the window – without leaving dirty drops or streaks behind. Thanks to its convenient battery operation and the compact design, the WV 1 guarantees maximum flexibility in cleaning all smooth household surfaces. Forget wasted paper towels, streaks, drips and all the hassles of traditional window cleaning – with the WV1 you'll clean like a pro and 3X quicker!