The build quality is high. Nothing makes a cheap impression or has a lot of game. The pressure point of all keys - except for the middle mouse wheel - is optimal. No false alarms through to soft keys still you break your fingers when pressed. Never had a mouse that has felt so good. However, the mouse wheel / middle button is a disaster. The pressure point of the middle button is hard to imagine, a pressure is almost always a rotational movement about. The left-right function ignoring best for the storage is much too hard.
Unlike all other mice I previously had (a lot) is distinguished by a Logitech this unprecedented precision. She wanders not automatically, does not jump even over edges or textured surfaces it is highly accurate.
Negative contrast is the battery consumption. Maybe I have a Monday device, but full replacement cells within reach are an absolute must. Those who intend to load the part using the supplied cable (incl. 1A USB socket adapter with 5.15 V) can buy a wired mouse is just as well, the difference is non-existent.
With 2.3 Ah cells keeps them at elevated gamer mode 1 (in words: one) (!) Day. I have an MS-mouse that runs for 6 months with two cells of the same type.
The Unifying receiver technology is pretty nice. Could so easily 3 devices (with the new software in the network) onto a receiver, which acknowledges the USB ports on nicely.
Thus 2 star deduction for the absolutely indisputable battery life.
But otherwise makes this mouse addictive.
