The Leifheit Window cleaner with handle & washer is one of my newest favorite products. Easy to use, it cleans the windows and sucked them dry in minutes. So even makes the window cleaning fun and streak-free result can be more than excellent. Although the battery life of 15 minutes is very short at first glance, as the window cleaning with this device is very fast, I can brush (4 normal + 4 window floor to ceiling windows and balcony doors) in time without any problems all the windows. A great product at a good price / performance ratio, which should be in every household, and therefore from me an absolute buy recommendation!