The battery in the Karcher window vac lasts for a short period (about 30 minutes)but it is usable and works fine. It has a long and short blade.
There is also the extension pole for it as can be seen in the last photo.
Available for pick up Skelton.
Karcher window vac with extension pole and accessories (Skelton CA11)
This offer has been gifted to someone and is no longer available.