Really powerful tool, you don't understand when it throws the bolts! I bought it for amateur use for the car but I believe it is also suitable for professional use.
In practice, it unscrews bolts with a tightening of 140Nm in 1-2sec. It screws easily at a slower speed, about 110Nm, if you stop it as soon as it starts hitting. Generally, it has 2 speeds for screwing and only the fast speed for unscrewing, but the button on the handle is proportional, so it has many levels of speed.
It has 2 very good batteries, a charger, and sockets 17, 19, 21. It is definitely worth the money, even for 2-3 times a year that I will use it. You won't find anything better for its price!
The only reservation is its durability over time because I have only had it for 1 month.