Logitech G9x Laser Mouse

Change the grip. Change the weight. Customize the LEDs. Even use onboard memory to take up to five mouse profiles with you to the next LAN party. In every way, the G9 mouse lets you tune for the way you play.
* Interchangeable grips: Use the included Wide Load and Precision grips to get a fit and feel that's best for your playing style—or get the ID Grip and put the image you want on the palm of your G9 mouse. The satin texture and fuller shape of the Wide Load grip add extra comfort, while the DryGrip technology and compact shape of the Precision grip give you unmatched fingertip control.
* Custom-color LEDs: Let you match your mouse to your PC, your game, your style. LEDs light up to show your mouse dpi and profile settings. Choose the color of your LEDs from a wide color spectrum.
* Weight-tuning system: Prefer a heavier or lighter mouse? Use the weight cartridge and up to 28 grams of metal weights to customize your G9x for just the right feel.