Nine programmable controls: Move keyboard commands to mouse buttons that are in easy reach Symmetrical compact shape: Feels comfortable in either hand and perfect for gamers who don't want a large mouse Gaming-grade optical sensor: Tracks accurately on a wide variety of surfaces and is tunable to achieve the responsiveness you need Three onboard memory profiles: Save profiles to the mouse once for gameplay on different computers and assign lighting colors to easily see which profile you're using. Logitech Gaming Software is available at logitech.com/downloads Easy configuration software: Simply drag and drop commands to the buttons to setup the mouse exactly the way you want