Kensington 72258 Ci60 Wireless Optical Mouse for PC or Mac Wireless optical mouse with a right-hand optimized design and soft, rubberized grips fpr enhanced comfort and control Five customizable buttons that can launch favorite applications, navigate websites, and streamline important tasks DiamondEye optical technology provides unmatched accuracy, while QuickRF wireless technology gives it superior responsiveness Backed by Kensington's five-year warranty and free technical support Measures 3.25 x 1.5 x 5.25 inches (WxDxL)