A basic practical design that delivers full function and performance.The MANHATTAN MH3 Classic Optical Desktop Mouse with its 1000 dpi resolution sensor offers a reliable performance in a sturdy practical design. Its compact size and ambidextrous shape feature a familiar three-button with scroll-wheel configuration ideal for daily computing needs.Easy Installation and Low MaintenancePlug and Play installation and compatibility with Windows 2000/XP/Vista/7 offer quick and easy operation. With no mechanical or rolling parts to wear or fail the MANHATTAN MH3 Classic Optical Desktop Mouse requires little maintenance to maintain reliable performance.- Accurate optical sensor and sturdy construction deliver reliable performance.- Basic three-button with scroll wheel configuration ideal for new systems replacements and upgrades.- Compact-sized ergonomic and ambidextrous design offers comfortable grip with less fatigue.- Low-friction base smoothly glides over work surfaces.- Plug and Play installation Windows and Mac compatible.