Full-size ergonomic design\nSculpted and contoured to provide support and to help ease hand strain for all-day comfort.\n\nMicro-precision scroll/tilt wheel\nMove more accurately – and in all directions – through large spreadsheets and documents with precise control options.\n\nRubber side grips\nNon-slip grips are easy to hold and provide comfort during long periods of work.\n\nLaser tracking\nEnjoy smooth tracking on just about any surface.\n\nBack/forward side buttons\nSearch the web much more efficiently with conveniently placed buttons for thumb-only page navigation.\n\nProgrammable Buttons\nCustomize each button to work more efficiently for you - the tilt wheel and thumb buttons can be programmed to switch applications, open browser windows and more.