High-quality product, the price corresponds to the quality.
In general, a good thing is to wash the windows from the outside, it’s faster to wash the inside yourself. Perhaps a model with a water tank will be faster.
Pros
More powerful than the previous model, easy to operate,
Cons
It does not return to the place where it started from, it is programmed to return to the lower corner, in order to move it to the upper one after the end of the program, you need to drive it with the remote control or turn on the program again and stop at the right place.