The Logitech G9x gaming mouse is customizable for comfort and function! Select either Wide Load or Precision grip, or choose from a selection of optional grips, for the perfect fit. The Wide Load grip offers a satin finish and wider body, for improved hand and wrist position, while the Precision grip features DryGrip finish and a compact shape to give you premium fingertip control. Weight-tune the mouse using the included 28 grams of metal weights, so you get the tracking experience that best Hand Orientation: Right Hand Maximum dpi: 5700 dpi Operating System Supported: Windows XP, Windows Vista, or Windows 7 System Requirement: 1 USB Port; CD-ROM Drive Features: 12 megapixels/second Image processing 30G Max. acceleration Up to 1000 reports/second USB report rate 8 million clicks Buttons (Left/Right) Interchangeable grips Next-generation gaming laser Onboard memory You can program up to five profiles (keyboard macros, dpi settings, and LED colors) Weight-tuning system Custom-color LEDs On-the-fly adjustable dpi Polytetrafluoroethylene feet Parts: 3 years limited Labor: 3 years limited