With the corded G9 mouse, gamers can enjoy interchangeable grips, on-the-fly dpi switching ranging from 200 dpi to 3200 dpi, full-speed USB laser tracking, an onboard-memory profiling system, weight tuning, a custom-color LED and the hyper-fast MicroGear Precision Scroll Wheel, which was introduced last year and is exclusive to Logitech. To help gamers get the best fit, the Logitech G9 mouse features a wealth of customizable features, including two interchangeable grips: Wide-Load grip and Precision grip. Designed to deliver comfort even during the longest gaming sessions, the Wide-Load grip provides a fuller shape and soft-touch, satin feel, while the Precision grip's DryGrip technology and compact shape offer fingertip control and a surer handle for any hand. For an even more comfortable feel, the G9 mouse allows for customized weight tuning and weight distribution. The innovative weight-tuning system enables gamers to choose from among hundreds of weight settings by inserting up to four additional weights in the mouse's weight tray, adding up to a maximum of 28 grams. In total, gamers can choose from eight additional weights. Using the new Logitech SetPoint software, gamers can create a number of profiles for their mouse. And with the mouse's onboard memory, gamers can take their personalized settings anywhere - it's no longer necessary to install SetPoint software on the gaming rig every time a gamer changes computers. Instead, up to five profiles - including specified keyboard macros, dpi settings and LED color settings - can be stored on the mouse for on-the-go gaming. Unlike other gaming mice that offer a range of 400 dpi to 2000 dpi, the G9 mouse can be shifted on the fly to up to 3200 dpi for faster, more precise cursor movements, or down to as low as 200 dpi for games that require pixel-precise control. A full-speed USB connection delivers up to 1,000 reports per second for smooth tracking without cursor lag Finally, the G9 laser mouse features the MicroGear Precision Scroll Wheel. Using a toggle mechanism on the bottom of the mouse, gamers can choose between precise click-to-click scrolling that is perfect for weapon selection, or nearly frictionless hyper-fast scrolling.