As for me, it is too round on top, i. E. if you need to grab and move the mouse to another place, my medium-sized hand does not always do it the first time . and there were problems with the software when the software was installed with official site, at the same time the software from the MS Store was downloaded in automatic mode, which caused a software conflict and the right button turned into the left one and vice versa, the wheel stopped working altogether, but this is all in the past, because the problem was solved quite quickly by deleting software from the official site. Left the software from the Windows store.