Logitech LX6 Wireless Optical Mouse - USB

 The High-definition optical sensor is two and a half times more responsive than any other stand optical mouse. The 1000 dpi optical engine delivers smoother, more accurate cursor control for those special details on any project or task,.  The contoured design and the soft rubber grips gives you effortless control and superior comfort. Enjoy up to 8 months of battery life before you replace*   ** Battery life may vary, depending on usage