Excellent tool that does the job I wanted quite well.
The head is quite durable and of good quality. Among the grass, there were scattered stones and dry branches. It managed to not only cut the grass but also lightly "shred" it, as well as cut the dry branches and throw away the stones.
As for the disadvantages, due to its large height, the chains do not cut the grass deeply (leaving stubble in the soil) and it is not suitable for finishing edges with a wall. It is also necessary to have face protection equipment and a shield for the trimmer