Fire for your money. I don't remember exactly, but I think I've been using it for over 5 years. By this time, one of the buttons began to stick, the surface of the mouse began to crumble. Even so, it's still a great mouse. Some pros: Multifunctional mouse. You can program any button and sequence of pressing. Can be used with both hands. The average size. Cons: Apparently due to the fact that it was made for both hands, there is a slight discomfort in the hand. but nothing serious.