[. . . ] Equipped with 6000dpi pro-laser engine supports high-speed movement and accurate precision. [. . . ] moreover , youalsocanchangethecolorofLEDlightforeachprofile (thereare 27 colors to chose from). Incaseyourequiremoreprofiles (buttonassignments) and macrosanddonotwishtodeletetheexistingprofiles, simply "backup" the existing profiles to your hard disk and load them back when needed. Basic function There are click, double click, internet/ window forward, internet/ window backward, PTPTM perfect tracking precision, and 8X speedy. 2X / 4X / 8X Speed: To speed up your mouse 2X/ 4X/ 8X, simply hold the assigned button, and release the assigned button to stop the function. However, the sensing distance between the sensor and surface is affected by the variety of mouse pads or surface. The macro editor allows you easily to record all the commands, including keystrokes and the press of mouse button. Step1 [Before record a macro] Make sure GM-M8000X is connected to the PC ExecutetheGHOSTTM Engine Software Select the "Macro Editor Tab" Step2 Enable "Record the duration or intervals" in case you'd like to record intervals between two commands. step3 "Double-click" to cycle through selection of action type required. [. . . ] You can set the report rate to 125Hz(8ms), 250Hz(4ms), 500Hz(2ms), or1000Hz(1ms)bymovingtheknobontheslider. [. . . ]