The unit itself is very well made, by the large handle is the window cleaner perfectly in your hand. Ever the feel of Kärcher is excellent also the Auseiandernehmen / assembly is a breeze, not hooked or jammed.
The only slight negative point, there is a "rubber plugs" which allows you to drain the water from the tank, this is sometimes a bit stubborn.
The battery power is sufficient with about 12-17 minutes of operation even for larger households, then loading will take about 2-3 hours.
His main area has the Kärcher washing windows is therefore also to fix them a spray bottle with microfibre paper. And the bill goes to brush his window definitely more often than previously :-)
It is true that some corners and edges still a small strip cleaners keep but since you are confined fix with a cloth over it, absolutely no problem. The time savings still remains!
I am personally convinced of the window cleaners, especially in winter, unfortunately fogged with us the window (despite regular airing) rather when the temperature is well below freezing. Where I used to be employed daily with Wipe & airing everything is now in a few minutes dry again. Alone for that I would buy the Kärcher anytime!