<b>Feature:</b><br> W Optical interface type<br> USB key number: 4<br> Optical resolution: 1600 DPI<br> Ergonomics: supports<br> LED mouse: blue LED light<br> System clock: 250Hz<br> Frame type: 3000 frames / sec.<br> Maximum acceleration: 20g<br> Ultra precise scroll wheel<br> Customize DPI switch: 600/1200/1600 DPI<br> Ultra-pretty and low-friction<br> Resulution adjustable in driverless unit<br> Switch life: 5 million cycles<br> Special edition for games, built-in weight<br> Optical technology works on most surfaces<br> Smart connectivity No need to code, plug and play<br> Compatible with Windows XP, Vista, Windows 7, Windows 8, ME, 2000, MAC<br>