The Vileda Windomatic Power is the easiest way to achieve streak-free results after cleaning windows, shower screens and smooth surfaces such as tables and kitchen worktops. Now with two power levels and a powerful Li-ion battery, the Windomatic Power can clean up to 120 windows on one charge; double that of the previous Windomatic. The water tank can be easily detached and is dishwasher safe.1 window = 1m squared (2)