The packaging is really crap, because you need as it was intended by the designer to open almost around the study, but a thick blade does. A plus is that batteries are and everything is ready for immediate use. The mouse does a fantastic haptic impression even though my old steel works had in the new not cheap or something. Pleasant weight class and precision. A deduction of points there for the middle mouse button. The power not as the great impression in comparison to the Revolution mouse. Do not know exactly how to say it but that turns me unfeinfühlig and felt at the beginning of turn slower and longer. Unfortunately, you can not adjust the scrolling speed.
Unfortunately, the mouse does not work on a glass table as the Revolution mouse from Logitech. But seis drum I think I'll happy with it :)