Sensitive, soft, silent, smooth, stylish and slim...all words that define the Macally DYNAMOUSE USB optical silent mouse for Mac and PC. This mouse has a DPI button that allows you to switchbetween a sensor resolution of 800, 1200, 1600 and 2400 DPI so you can set the tracking speed and precision to your preference. The soft-click buttons are sensitive and extremely silent so youcan do your job without distraction. The scroll wheel has a double function as it allows you to scroll smoothly through web pages/documents and acts as a third button. The 5ft long cable allowsyou to connect the mouse to your Mac or PC (Plug and Play, no driver required), even when it's under your desk. The Macally DYNAMOUSE has a stylish, matte finish and ambidextrous design thatoffers maximum comfort to both left-handed and right-handed users and helps to increase your productivity.