Let's start at the beginning:
Materials and processing are the first impression, very good indeed.
On the Internet, however, accumulate unfortunately reports of cable breaks: after one week, I can use this course say nothing, therefore takes the no influence on my vote.
A Detailed Picture of the mouse:
The pressure points of the buttons are nice and crunchy, not too loud. The mouse could easily go one track (a matter of taste), but thanks to the solid gridded mouse wheel still good zubedienen.
The materials take well to that lead for users with the fingertips without issuing the palm fits the mouse just fine in the hand (hand size is not so for wear). Also it glides on my cloth mouse pad smoothly.
On the installed Win7 64bit system the mouse is detected immediately, all other deeper settings follow then after installing the mouse software: the previously known and may already be installed by a Logitech SetPoint keyboard does not work here.
Since I'm not a lively gamers, but rather sought an Office Mouse, I can not make an gaming capabilities. In Windows operating but can the G400 adapt to personal preferences which pointer speed and precision, responds cleanly and accurately.
Presumably, the question is by now clear: "Why are the spinner to the praise here only 3 stars?".
This is easily explained: the left mouse button rattles, namely tidy. Who takes the hand from the mouse to write to them frightened then to place again: the sound which ensteht unfortunately too loud to ignore it. And who wants to put his finger every time as gentle as a pilot his Boeing?
The problem of rattling keys is distributed over the Internet, both left and right mouse button make here problems. A great pity as I think, for if not this defect, a Logitech G400 would stay on my desk and no other model today.
