Switch Life: 5 million cycle .16-bit ultra-wide data path .Compatible with Windows XP, Vista, Windows 7,ME,2000 and Mac OS...or latest Color: Sky Blue , Red , Purple , Orange * Most suitable for Laptop user and PC user ,High Quality, Compact Design and Measurable Weight .Ultra-precise Scroll Wheel .High Resolution: 1600DPI * Most suitable for Laptop user and PC user .Optical technology works on most surfaces * Ergonomically designed, long-term use without fatigue .Intelligent connectivity, no need to code, plug & play * .Built-weight iron, feel comfortable, mobile and stability .The USB cable length is up to about 1.5m