I have it for a week.
I have made a total of 3 bags of tile adhesive with a rate of one bucket of 8 liters every two hours.
In the last bucket, it started to decrease its speed on its own.
The more you mix, the gradually it slows down.
When it is working, in the first buckets, it messes everything around because you can't instantly turn off the switch. If you leave it, it goes through the smooth start-up process again and nothing happens.
Of course, as you can understand, it does not have an adjustable switch.
There are cheaper ones that are much better.
I just found this one ready for delivery and bought it.