The rubber is hard and on thin glass it drags and falls off. It doesn't stick well on double glass.

The magnets are weak even on very thin glass. The rubber doesn't collect the water either. The video has nothing to do with it.

Unfortunately, it was a big failure...
Although it seemed to have good magnets, it couldn't actually perform and kept falling off the window the whole time, resulting in me not being able to get any work done...

It does not work on double windows, but I tried it on a single window and still the magnets do not work!!
For potential customers who have double windows, it is useless!!

In double glass it doesn't work at all. In single glass it sticks properly, but it doesn't clean well, it leaves marks with its shape..
Maybe for special cases of single glass that cannot be cleaned in a conventional way, it might be worth it.

It was not good at all... it does not have the power to clean and it falls apart... I will not buy it again... very good.

It does not magnetize on double glass..the tool is fake..on single glass it's fine but still doesn't have enough water and soap

Chinese useless product.. wasted money..!

I have a fireplace and it did the job perfectly. The glass had become so black that you couldn't see inside. Only with dish soap, the result is excellent. The handle reaches a certain point for cleaning, but it made my job easy

It is not suitable for double glazing, the magnet does not penetrate them and the device falls.
Maybe it works for old houses with single glazing.
Useless product!!!!!!