Truly a very good mouse, very ergonomic, very easy to use. I apreciated the wheel that allows quick access (coasting), the live search feature to search engine, you highlight a word for instance and you simply press the button on the back of the mouse, you arrive directly to the search engine (you can choose from: Google, etc ...), super convenient! Wireless and it's still not bad !! in short, a great purchase that one can not regret it!