Combining style and on-the-go comfort, the ergonomically designed, nicely affordable wireless HP Blu-Ray Wired Optical Gaming Mouse provides uncompromising performance with adjustable sensitivity for maximum workability on a variety of surfaces. It has advanced HP Blu-Ray technology for less interference and longer range of operation means no wires to tangle or limit movement. Automatic power-saving features with smart standby modes. System Requirements: Windows XP, Windows Vista, Windows 7, Mac OS X 10.4 (or later), and USB port. Intelligent connectivity, no need to code, easy to plug, and play. Cursor Speed: 800DPI/1200DPI (adjustable). Low voltage alarm function. Wireless Optical Mouse. Ergonomic design, makes you feel natural and comfortable, the long fierce game will not feel tired.