Packaging is prométeur and portends a premium product ...
It is only a Logitech product, excellent finish, strong and powerful, like the brand of the mouse.
However I can see little real difference with respect to lower models. Any horizon:
Darkfield The system works very well! ... But is no more accurate than the traditional laser system more modest brand models (comparison made pixel when editing on photoshop) ... even a little disappointing on the precision ...
The side button under the thumb does not always react as desired ... it lacks relief to be effective.
The next and previous buttons are too focused and forces in folding the thumb to use, quite confusing ... other models are better designed ...
But once these (small?) Past faults, we can not deny that we have in hand a quality peripheral.
I think I expected too much of this model and it is just ... fine. Not perfect.
It's nice to see the scroll detachable (which I had lost on the last model in my possession) and usability of the object that perfectly fits the palm of the hand (except for left and little hands. ..).
Also the rechargeable battery system is innovative and allows to use the device while charging it. Just remember to have a USB port on the desktop (if an extension cord is included) or AC power. Logitech has carefully until the "kit" load transport equipment ... stunning finish!
To sum up: This is not the perfect mouse and most professional ever, but an excellent Logitech, since there is knowledge of its peculiarities and limitations.
