Experience new levels of productivity and excitement with The Adesso iMouse X1 Multi-Color 6-Button Gaming Mouse. It features multiple built-in colors, that are accessible with a touch of a button. It tracks with an optical sensor which lets you work with better speed and accuracy. In addition, the iMouse X1 includes a 4 distinct levels of DPI resolution (800, 1600, 2400, 3200) . You can easily switch between these DPI resolutions with the DPI Switch button. On top of all these features, it is driver-less and has a built in thumb rest which provides great control, response and comfort with minimal hand movement.