I just received my trackball in the times announced by the site and everything is in excellent condition therefore in terms of Amazon: nothing to say! When the trackball, my congratulations to the engineers at Logitech. A great product and very comfortable to use. I recommend it to anyone who wants to move to trackball. Besides not need batteries as those with no son. The accuracy is perfect with a good set of pointers on windows, does it work the hair.
