The battery-operated WV 75 window vacuum cleaner provides for streak-free brilliance on smooth surfaces like glass, mirrors or tiles. During the squeegeeing the dripping dirty water is sucked off without leaving traces. The design concept aims at a compact and handy form. On the one hand the lines communicate quality and elegance and on the other hand they visualise the suction flow and flow dynamics in the unit. The ergonomic grip ensures safe handling.