I took the track ball out of curiosity following a promo. Without special conviction, but I must admit that it is a great product. Whether for the office, drawing, or even some game, it really changes the mouse and provides a very pleasant comfort. I would just put the buttons (left and right click) a little wider, to match all hands, personally I feel a little cramped. A good product, delivered with a mark of battery. We go out of the package, one branch, it works. nothing to add.
